1Part I EngineChapter 1 Engine Assembly
(MR479Q, MR479QA, MR481QA)Section 1 Routine Inspection1. Check coolant
2. Check engine oil
3. Check battery
4. Check air cleaner element assembly
5. Check spark plug
6. Check drive belt
Figure 1
Notice:
zCheck the belt deflection at the specified point See (Figure 1).
zSet tension to specified value when installing new belt.
zCheck the deflection to ensure it is below the specified value after the belt runs for over 5 minutes.
zReinstall the belt which has been running for over 5 minutes. The deflection of the old belt is regarded as
the standard for inspection.
zCheck V-belt for tension and distortion after the engine cranks for 2
turns.
7. Check ignition timing See (Figure 2)
a) Warm up the engine.
b) When using fault diagnosis tester
Connect fault diagnosis tester to fault diagnosis interface socket.
Ignition timing:
MR479Q: 10 ± 2° BTDC (before top dead center) at idle
MR479QA: 10 ± 2° BTDC at idle
MR481QA: 10 ± 2° BTDC at idleFigure 2New Belt mm Old Belt mm
Fan Belt 7～
13. 5
Power steering Belt 5～
66～
8
A/C Belt 6. 5
～78～
9 Belt deflection See (Table 1)
Be lt pre ssure : 98NBelt Looseness
Measuring PointWater pump
Power steering
crankshaftgenerator
Air condition
compressor pump11.5～
9
