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Periodic maintenance and adjustment
stick. NOTICE: When adding the en-
gine oil, be careful not to fill above the
"H" level mark on the dipstick. Use
only the recommended oil. (See page
122.) Make sure that no foreign materi-
al enters the engine oil tank.
RS90P / RS90PLT / RST90PGT
1. "H" level mark
2. "L" level mark
RST90
1. "H" level mark
2. "L" level mark
82
Recommended engine oil:
See page 122.
Oil quantity:
With oil filter cartridge replacement:
[ECS00462]
1
Without oil filter cartridge replace-
ment:
2
Total amount:
RS90P 4.0 L (4.23 US qt, 3.52 Imp.qt)
RS90PLT 4.0 L (4.23 US qt,
3.52 Imp.qt)
RST90 3.7 L (3.91 US qt, 3.26 Imp.qt)
RST90PGT 4.0 L (4.23 US qt,
3.52 Imp.qt)
18. Install and tighten the oil filler cap.
19. Start the engine, and then let it idle for
several minutes while checking it for oil
leakage. If oil is leaking, immediately turn
the engine off and make sure that the en-
gine oil drain bolts, the cylinder head cap,
and the oil filler cap are installed correct-
ly.
20. Turn the engine off, and then connect the
oil level gauge coupler. NOTICE: If oil is
leaking or the oil level warning indica-
tor comes on when the engine is run-
ning, immediately turn the engine off
and have a Yamaha dealer check the
snowmobile. Continuing to operate
RS90P 3.3 L (3.49 US qt,
2.90 Imp.qt)
RS90PLT 3.3 L (3.49 US qt,
2.90 Imp.qt)
RST90 3.0 L (3.17 US qt,
2.64 Imp.qt)
RST90PGT 3.3 L (3.49 US qt,
2.90 Imp.qt)
RS90P 3.1 L (3.28 US qt,
2.73 Imp.qt)
RS90PLT 3.1 L (3.28 US qt,
2.73 Imp.qt)
RST90 2.8 L (2.96 US qt,
2.46 Imp.qt)
RST90PGT 3.1 L (3.28 US qt,
2.73 Imp.qt)
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