2017 YAMAHA WR 250F torque

TIGHTENING TORQUES
2-13
EAS2GBB066ENGINE TIGHTENING TORQUES
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEMThread
sizeQ’ty TIGHTENING TORQUES Remarks
Camshaft cap bolt
M6 8 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Cylinder head blind plug
M12 1 28 Nm (2.8 m·kgf, 20 ft·lbf)
Spark plug
M10 1 13 Nm (1.3 m·kgf, 9.4 ft·lbf)
Cylinder head stud bolt
M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Cylinder head stud bolt (exhaust
pipe)M8 2 15 Nm (1.5 m·kgf, 11 ft·lbf)
Cylinder head bolts
M9 4 33 Nm (3.3 m·kgf, 24 ft·lbf)
Cylinder head nuts
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Cylinder head cover bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Cylinder bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil pressure check bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Balancer weight plate screw
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Balancer driven gear nut M14 1 50 Nm (5.0 m·kgf, 36 ft·lbf)
Balancer nut M10 1 38 Nm (3.8 m·kgf, 27 ft·lbf)
Timing chain guide stopper plate
(exhaust side)M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Timing chain tensioner cap bolt
M6 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Timing chain tensioner bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Coolant drain bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Radiator hose clamp screw
M6 8 1.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
Radiator bolt
M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Radiator pipe bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Radiator pipe joint bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Radiator fan bolt
M6 3 8 Nm (0.8 m·kgf, 5.8 ft·lbf)
Water pump housing cover bolt
M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil pump bolt
M5 2 5 Nm (0.5 m·kgf, 3.6 ft·lbf)
Oil pump cover screw
M4 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lbf)
Oil strainer bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Throttle cable cover bolt
M5 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Throttle body joint bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Throttle body joint clamp bolt
M5 1 3.0 Nm (0.30 m·kgf, 2.2 ft·lbf)
Air filter joint clamp bolt
M4 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Air filter case bolt M6 3 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Air filter bolt M6 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lbf)
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TIGHTENING TORQUES
2-14
Air filter guide holder screw
M5 8 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Air filter case cap screw
M5 1 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Starter knob/Idle screw
M12 1 2.1 Nm (0.21 m·kgf, 1.5 ft·lbf)
Throttle cable nut (pull)
M10 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Throttle cable nut (return)
M10 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Clutch cable adjuster and locknut
M6 1 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Clutch cable locknut (engine side)
M8 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Exhaust pipe nut
M8 2 See TIP.
Exhaust pipe protector screw
M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Exhaust pipe bracket bolt
M8 1 20 Nm (2.0 m·kgf, 14 ft·lbf)
Frame and silencer bolt (front) M8 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Frame and silencer bolt (rear) M8 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Exhaust pipe clamp bolt
M8 2 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Spark arrester bolt
M5 4 9 Nm (0.9 m·kgf, 6.5 ft·lbf)
Muffler cap bolt
M5 6 5 Nm (0.5 m·kgf, 3.6 ft·lbf)
Oil nozzle bolt
M5 1 5 Nm (0.5 m·kgf, 3.6 ft·lbf)
Engine oil drain bolt
M10 1 20 Nm (2.0 m·kgf, 14 ft·lbf)
Crankcase bolt
M6 12 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Clutch cable holder bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Crankshaft end accessing screw
M36 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Timing mark accessing screw
M14 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Drive chain sprocket cover bolt
M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Crankcase bearing cover plate
screwM6 6 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Crankcase bearing cover plate
screw (crankshaft)M8 4 22 Nm (2.2 m·kgf, 16 ft·lbf)
Oil passage squeeze nozzle
M8 1 3.0 Nm (0.30 m·kgf, 2.2 ft·lbf)
Clutch cover bolt
M6 7 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Left crankcase cover bolt
M6 7 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Right crankcase cover bolt
M6 11 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil filter element cover bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Kick shaft ratchet wheel guide bolt
M6 2 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Kickstarter lever bolt
M8 1 33 Nm (3.3 m·kgf, 24 ft·lbf)
Kickstarter lever boss screw
M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Primary drive gear nut
M16 1 75 Nm (7.5 m·kgf, 54 ft·lbf)
Clutch spring bolt
M6 5 10 Nm (1.0 m·kgf, 7.2 ft·lbf) ITEMThread
sizeQ’ty TIGHTENING TORQUES Remarks
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E

TIGHTENING TORQUES
2-15
TIP
Exhaust pipe nut
First temporarily tighten all nuts to 13 Nm (1.3 m·kgf, 9.4 ft·lbf). Then retighten them to 20 Nm (2.0
m·kgf, 14 ft·lbf).Clutch boss nut M16 1 100 Nm (10 m·kgf, 72 ft·lbf)Use a
lock
washer.
Drive sprocket nut M18 1 75 Nm (7.5 m·kgf, 54 ft·lbf)Use a
lock
washer.
Segment
M8 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Shift guide bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Stopper lever bolt
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Shift pedal bolt M6 1 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Rotor nut
M12 1 65 Nm (6.5 m·kgf, 47 ft·lbf)
Stator screw
M5 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Crankshaft position sensor bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Damper assembly cover bolt
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Starter clutch bolt
M6 6 16 Nm (1.6 m·kgf, 12 ft·lbf)
Starter motor bolt
M6 1 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Coolant temperature sensor
M10 1 16 Nm (1.6 m·kgf, 12 ft·lbf)
Neutral switch bolt
M5 2 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Intake air temperature sensor screw
M5 1 1.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
Rectifier/regulator bolt
M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
ECU bolt
M5 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Ignition coil bolt
M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Throttle position sensor screw
M5 2 3.4 Nm (0.34 m·kgf, 2.5 ft·lbf)
Intake air pressure sensor screw
M6 1 5 Nm (0.5 m·kgf, 3.6 ft·lbf) ITEMThread
sizeQ’ty TIGHTENING TORQUES Remarks
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LT
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TIGHTENING TORQUES
2-16
EAS2GBB067CHASSIS TIGHTENING TORQUES
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEMThread
sizeQ’ty TIGHTENING TORQUES Remarks
Outer tube and upper bracket bolt M8 4 21 Nm (2.1 m·kgf, 15 ft·lbf)
Outer tube and lower bracket bolt M8 4 21 Nm (2.1 m·kgf, 15 ft·lbf)
Upper bracket and steering stem nut M24 1 145 Nm (14.5 m·kgf, 105 ft·lbf)
Upper handlebar holder bolt M8 4 28 Nm (2.8 m·kgf, 20 ft·lbf)
Lower handlebar holder nut M10 2 40 Nm (4.0 m·kgf, 29 ft·lbf)
Engine stop switch screw M3 1 0.5 Nm (0.05 m·kgf, 0.36 ft·lbf)
Start switch screw M4 1 0.5 Nm (0.05 m·kgf, 0.36 ft·lbf)
Lower ring nut M28 1 See TIP.
Outer tube and damper assembly M51 2 30 Nm (3.0 m·kgf, 22 ft·lbf)
Inner tube and adjuster M22 2 55 Nm (5.5 m·kgf, 40 ft·lbf)
Damper assembly and base valve M42 2 28 Nm (2.8 m·kgf, 20 ft·lbf)
Damper assembly adjuster M12 2 29 Nm (2.9 m·kgf, 21 ft·lbf)
Bleed screw (front fork) and base
valveM5 2 1.3 Nm (0.13 m·kgf, 0.94 ft·lbf)
Front fork protector bolt M6 6 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Front fork protector and brake hose
holder nutM6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Throttle grip cap screw M5 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Clutch lever holder bolt M6 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Clutch lever nut M6 1 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Front brake master cylinder holder
boltM6 2 9 Nm (0.9 m·kgf, 6.5 ft·lbf)
Front brake master cylinder reser-
voir cap screwM4 2 1.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
Front brake lever pivot bolt M6 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Front brake lever pivot nut M6 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Front brake lever position locknut M6 1 5 Nm (0.5 m·kgf, 3.6 ft·lbf)
Front brake hose holder and lower
bracket boltM6 1 9 Nm (0.9 m·kgf, 6.5 ft·lbf)
Front brake hose union bolt M10 2 30 Nm (3.0 m·kgf, 22 ft·lbf)
Front brake caliper bolt M8 2 23 Nm (2.3 m·kgf, 17 ft·lbf)
Front brake pad pin M10 1 17 Nm (1.7 m·kgf, 12 ft·lbf)
Front brake pad pin plug M10 1 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Front brake caliper bleed screw M8 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Front wheel axle nut M16 1 90 Nm (9.0 m·kgf, 65 ft·lbf)
Front wheel axle pinch bolt M8 4 21 Nm (2.1 m·kgf, 15 ft·lbf)
LT

TIGHTENING TORQUES
2-17
Front brake disc bolt M6 6 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Rear brake disc bolt M6 6 14 Nm (1.4 m·kgf, 10 ft·lbf)
Footrest bracket bolt M10 4 55 Nm (5.5 m·kgf, 40 ft·lbf)
Sidestand bolt M10 1 25 Nm (2.5 m·kgf, 18 ft·lbf)
Rear brake pedal bolt M8 1 26 Nm (2.6 m·kgf, 19 ft·lbf)
Rear brake pedal position locknut M6 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Rear brake master cylinder bolt M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Rear brake master cylinder reservoir
cap boltM4 2 1.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
Rear brake hose union bolt M10 2 30 Nm (3.0 m·kgf, 22 ft·lbf)
Rear brake caliper bleed screw M8 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Rear brake pad pin M10 1 17 Nm (1.7 m·kgf, 12 ft·lbf)
Rear brake pad pin plug M10 1 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Rear wheel axle nut M22 1 125 Nm (12.5 m·kgf, 90 ft·lbf)
Drive chain puller adjust bolt and
locknutM8 2 21 Nm (2.1 m·kgf, 15 ft·lbf)
Rear wheel sprocket nut M8 6 50 Nm (5.0 m·kgf, 36 ft·lbf)
Nipple (spoke) — 72 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Rear brake disc cover bolt M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Rear brake caliper protector bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Engine mounting bolt (upper side) M10 2 45 Nm (4.5 m·kgf, 33 ft·lbf)
Engine mounting bolt (front side) M10 1 55 Nm (5.5 m·kgf, 40 ft·lbf)
Engine mounting bolt (lower side) M10 1 53 Nm (5.3 m·kgf, 38 ft·lbf)
Engine bracket bolt (upper side) M8 4 34 Nm (3.4 m·kgf, 25 ft·lbf)
Engine bracket bolt (front side) M8 4 34 Nm (3.4 m·kgf, 25 ft·lbf)
Rear frame and frame bolt M8 4 38 Nm (3.8 m·kgf, 27 ft·lbf)
Engine guard bolt M6 3 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Pivot shaft and nut M16 1 85 Nm (8.5 m·kgf, 61 ft·lbf)
Rear shock absorber assembly up-
per boltM10 1 56 Nm (5.6 m·kgf, 41 ft·lbf)
Rear shock absorber assembly low-
er boltM10 1 53 Nm (5.3 m·kgf, 38 ft·lbf)
Rear shock absorber locknut M60 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Relay arm bolt (swingarm side) M14 1 70 Nm (7.0 m·kgf, 51 ft·lbf)
Connecting arm bolt (relay arm side) M14 1 80 Nm (8.0 m·kgf, 58 ft·lbf)
Connecting arm bolt (frame side) M14 1 80 Nm (8.0 m·kgf, 58 ft·lbf)
Swingarm and brake hose holder
screwM5 4 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Drive chain tensioner bolt (upper
side)M8 1 16 Nm (1.6 m·kgf, 12 ft·lbf) ITEMThread
sizeQ’ty TIGHTENING TORQUES RemarksLT
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TIGHTENING TORQUES
2-18
Drive chain tensioner bolt (lower
side)M8 1 16 Nm (1.6 m·kgf, 12 ft·lbf)
Drive chain support bolt M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Drive chain support nut M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Drive chain guide bolt M5 3 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Rear frame and left cover bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Fuel tank bolt (front side) M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Fuel tank bolt (rear side) M6 1 9 Nm (0.9 m·kgf, 6.5 ft·lbf)
Fuel tank bracket bolt (front side) M6 4 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Fuel tank bracket bolt (rear side) M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Fuel pump bolt M5 6 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Fuel sender screw M6 2 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Fuel inlet pipe screw M5 2 3.4 Nm (0.34 m·kgf, 2.5 ft·lbf)
Fuel tank cap cover bolt M6 2 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Seat set bracket and fuel tank screw M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Seat bolt M8 2 22 Nm (2.2 m·kgf, 16 ft·lbf)
Left side cover bolt M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Right side cover bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Frame and air scoop bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Fuel tank and air scoop bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Radiator guard and air scoop bolt M6 4 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Front fender bolt M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Rear fender bolt (front side) M6 4 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Rear fender bolt (rear side) M6 2 16 Nm (1.6 m·kgf, 12 ft·lbf)
Mud flap screw — 2 1.3 Nm (0.13 m·kgf, 0.94 ft·lbf)
Headlight body and headlight stay
boltM6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Multi-function meter nut M5 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Multi-function meter bracket bolt M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Front brake hose guide and head-
light stay boltM5 1 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Plate 1 and front fork protector bolt M5 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Plate 2 and front fork protector
screw— 2 0.5 Nm (0.05 m·kgf, 0.36 ft·lbf)
Speed sensor lead holder and
speed sensor lead bracket boltM6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Speed sensor lead bracket and low-
er bracket boltM6 1 13 Nm (1.3 m·kgf, 9.4 ft·lbf)
Starter relay and positive battery
lead boltM6 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf) ITEMThread
sizeQ’ty TIGHTENING TORQUES Remarks

TIGHTENING TORQUES
2-19
TIP
Lower ring nut
1. First, tighten the lower ring nut approximately 38 Nm (3.8 m·kgf, 27 ft·lbf) by using the steering nut
wrench, then loosen the lower ring nut one turn.
2. Retighten the lower ring nut 7 Nm (0.7 m·kgf, 5.1 ft·lbf).Starter relay and starter motor lead
boltM6 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Lean angle sensor bolt M4 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Taillight assembly screw — 3 1.1 Nm (0.11 m·kgf, 0.80 ft·lbf)
Taillight lead clamp and rear fender — 3 0.5 Nm (0.05 m·kgf, 0.36 ft·lbf)
Battery bracket bolt M6 4 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Frame and battery negative lead
boltM6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Rear fender and relay bracket screw — 2 1.1 Nm (0.11 m·kgf, 0.80 ft·lbf)
Front reflector nut (For Canada) M6 2 3.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Rear reflector nut (For Canada) M5 3 1.8 Nm (0.18 m·kgf, 1.3 ft·lbf)ITEMThread
sizeQ’ty TIGHTENING TORQUES Remarks
LT

ENGINE
3-16
3. Check:
• Tightening torques
4. Install:
• Exhaust pipe protector
EAS2GBB095CHECKING THE FUEL LINE
1. Remove:
• Seat
• Side cover (left/right)
• Air scoop (left/right)
Refer to “GENERAL CHASSIS” on page 5-
1.
• Fuel tank
Refer to “FUEL TANK” on page 8-1.2. Check:
• Fuel hose “1”
Crack/damage  Replace.
Loose connection  Connect properly.
3. Install:
• Fuel tank
Refer to “FUEL TANK” on page 8-1.
• Air scoop (left/right)
• Seat
• Side cover (left/right)
Refer to “GENERAL CHASSIS” on page 5-
1.
EAS2GBB096CHECKING THE ENGINE OIL LEVEL
1. Stand the vehicle upright on a level surface.
2. Start the engine, warm this up for 3 minutes,
and then stop the engine and wait about 5
minute.
3. Check:
• Oil level
The engine oil level should be between the
minimum level mark “a” and maximum level
mark “b”.
Below the minimum level mark  Add the
recommended engine oil to the proper level. Exhaust pipe 1 bolt and nut “1”
20 Nm (2.0 m·kgf, 14 ft·lbf)
Exhaust pipe 1 and exhaust pipe
2 bolt “2”
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Exhaust pipe 2 and silencer bolt
“3”
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Silencer and silencer bracket bolt
“4”
30 Nm (3.0 m·kgf, 22 ft·lbf)
Exhaust pipe protector screw
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
LOCTITE®
T R..
2
1
4
3
T R..
1
a b