Engine Oil Pressure
1. Remove the engine oil pressure switch, and set an oil pressure tester (Code No. 07916-32032). (Adaptor screw size: PT 1/8).
2. Start the engine. After warming up, measure the oil pressure of both idling and rated speeds.
3. If the oil pressure is less than the allowable limit, check the following.
Engine oil insufficient
Oil pump defective
Oil strainer clogged
Oil filter cartridge clogged
Oil gallery clogged
Excessive oil clearance
Foreign matter in the relief valve

(When reassembling)
• After checking the engine oil pressure, tighten the engine oil pressure switch to the specified torque.

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