Lubrication System Service Information; Lubrication System Troubleshooting; Lubrication System Torque Values - Honda 2003 NPS50 Ruckus Service Manual

SERVICE I NFORMATION
GENERA L
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Used engine oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periods, Although this is
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u n l i kely unless you handle used oil on a daily basis, it is still advisable to thoroughly wash your hands with soap and
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water as soon as possible after handling used oil.
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The oil pump can be serviced with the engine installed i n the frame.
The service procedures i n this section must be performed with the engine oil drained.
When removing and installing the oil pump, use care not to altow dust or
If any portio n of the oil p u m p is worn beyond the specified service limits, replace the oil pump as an assembly.
After the oil pump has been installed, check that there are no oil leaks.
SPECIFICATIONS
ITEM
E n g i n e oil capacity
Recommended engine oil
O i l pump rotor
TORQUE VALUES
Oil pump cover screw
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TROUBLESHOOTING
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Engine oil level too low
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O i l consumption
External oil leak
Wor n piston ring or incorrect piston ring installation
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Worn cylinder
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Worn valve guide or seal
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Oil contamination
O i l not changed often enough
Fau lty cylinder head gasket
Worn piston ring
11664
Revised: September 2006, 2003�2007 NPS50
©2006 American Honda Motor Co., Inc. - All Rights Reserved
MSV
(0609)
A CAUTION
0.6 liter (0,6 US qt, 0.5 1mp qt)
At draining
0.7 liter (0.7 US qt, 0.61mp qt)
At disassembly
Pro Honda GN4 4-stroke oil (U.S.A. and Canada) or an equivalent
motor oil
API service classification: SG or higher
JASO T 903 standard: MA
Viscosity: SAE 1 OW-30
0.15 (0.006)
Tip clearance
0,1 5 - 0.20 (0.006 - 0.008)
Body clearance
0.05
Side clearance
2.0 N·m (0.2 kgf·m, 1.4 1bf·!tl
dirt
to enter the engine.
STANDARD
0.10 (0.002 0.0041
LUBRICATION SYSTEM
Unit · mm ( In)
SERVICE LIMIT
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0.20 (0.008)
0.22 (0.009)
0.12 (0.0051
5-3