2006 YAMAHA YFM50R fuel filter

8-7INITIAL EVERY
month 1 3 6 6 12
ITEM ROUTINEWhichever
km 320 1200 2400 2400 4800 comes first
(mi) (200) (750) (1500) (1500) (3000)
hours 20 75 150 150 300
Valves*9Check valve clearance.
2 222
9Adjust if necessary.
Cam chain*9Check chain tension.
2 222
9Adjust if necessary.
9Check condition.
Spark plug9Adjust gap and clean.22222
9Replace if necessary.
Air filter element9Clean. Every 20–40 hours
9Replace if necessary. (more often in wet or dusty areas)
Carburetor*9Check idle speed/choke lever operation.
2222
9Adjust if necessary.
Crankcase breather9Check breather hose for cracks or damage.
222
system*9Replace if necessary.
9Check for leakage.
Exhaust system*9Tighten if necessary.222
9Replace gasket if necessary.
Fuel line*9Check fuel hose for cracks or damage.
222
9Replace if necessary.
EBU02621
PERIODIC MAINTENANCE/LUBRICATION
NOTE:8For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.
8For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. However, keep in mind
that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed.
5YF-9-62 8 2/23/05 6:56 PM Page 8-7

EBU00440
Troubleshooting chart
1. Fuel
Check if there is
fuel in the fuel
tank
2. Compression
Use electric starter
to see if there is
compression
3. Ignition
Remove spark plug
and check electrodes
WetWipe clean with dry
cloth
DryAttach spark plug cap
and ground to chassisUse electric
starterSpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust spark plug gap
or replace spark plug
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is fuelTurn the fuel
cock to “OFF”
Remove the
fuel hose from
the fuel cock.
Some fuelTurn the fuel
cock to “RES”Restart engine
No fuelSupply fuel
4. Battery
Use electric
starter
Engine turns
over quicklyBattery good
Engine turns
over slowlyCheck fluid, recharge,
check connections
Check fuel flow
Water or dirt
mixed in fuel
Turn the fuel
cock to “ON”No fuelFuel cock clogged
Clean the fuel filter
and the fuel tank
Clean fuel cock
8-71
5YF-9-62 8 2/23/05 6:56 PM Page 8-71

10-3
Model YFM50R
Final gear oil:
Type SAE 80API “GL-4” Hypoid gear oil
Quantity:
Total amount 0.12 L
Air filter: Wet type element
Fuel:
Type Unleaded gasoline only
For Europe: Regular unleaded gasoline only
Tank capacity 6.8 L
Reserve amount 0.9 L
Carburetor:
Type/manufacturer VM16SH/MIKUNI
Spark plug:
Type/manufacturer CR7HSA/NGK
Gap 0.6–0.7 mm
Clutch type: Wet, multiple-disc automatic
5YF-9-62 9~ 3/4/05 10:00 PM Page 310