Yamaha jet ski service manual




















Antidotes External: Flush with water. Internal: Drink large quantities of water or milk. Maximum impeller-to-housing clearance: 0. Page 75 Before lubricating the throttle cable, squeeze the throttle lever and remove the rubber seal 2. Fuel pump module removal 1. Hose clamps installation 1.

Page 98 Fuel injector resistance: reference data Throttle body inspection 1. Page 99 Bypass valve motor inspection 1. Throttle body installation 1. However, if it is necessary to remove the bypass air screw, be sure to note the number of times the screw is turned from its set position. Turn synchronizing screw 1 3 clock- wise approximately 7 times until it starts to contact the lever. Butterfly valves 2 and 3 open if the screw is turned more than 7 times. Page Adjust the throttle body synchronization with the air filter case uninstalled.

Connect the fuel hose and clamp. Connect the Yamaha Diagnostic Sys- tem. Remove the sub wiring harness from the air filter case, and then connect it to the throttle bodies and main wiring harness. Adjust the throttle stop screw until trolling 1, speed is within specification.

NOTE: Insufficient compression pressure will result in a loss of performance. Minimum compression pressure reference data : 1, kPa With the throttle wide open, crank the engine until the reading on the compres- sion gauge stabilizes.

Engine mount inspection 1. Oil strainer inspection 1. Oil tank installation 1. Oil breather plate bolt: 1st: 1. Oil pump installation 1. Maximum camshaft runout: 0. Camshaft-journal-to-camshaft- cap clearance: 0. Camshaft journal diameter: NOTE: Gradually tighten the intake and exhaust camshaft cap bolts in 2—3 steps in the sequence shown. Cylinder head inspection 1. Cylinder head warpage limit: 0. Intake valve lifter Intake valve pad Intake valve cotter Intake valve upper spring seat Valve spring free length: Intake valve spring: Valve stem diameter a: Intake valve: 3.

Calculate the valve stem-to-valve guide clearance as follows. Replace the valve guide if out of specification. Install the new valve guide 2 by striking the special service tool from the camshaft side until the valve guide clip 3 contacts the cylinder head.

NOTE: Apply engine oil to the surface of the new valve guide. Eliminate carbon deposits from the valve with a scraper. Lap the valve slowly on the valve seat with a valve lapper commercially obtainable as shown.

Reface the valve seat with the valve seat cutter. Apply a thin, even layer of lapping com- pound onto the valve seat, and then lap the valve using a valve lapper commer- cially obtainable. Compress the valve spring, and then install the valve cotter 1 using a thin screwdriver with a small amount of grease applied to it. After all of the bolts are fully loosened, remove them. Thoroughly wash the crankcase halves in a mild solvent. Thoroughly clean all the gasket surfaces and crankcase mating surfaces.

Lubricate: Crankshaft journal bearings with the recommended lubricant Recommended lubricant: Engine oil 2. A typical manual or. The digitally transmitted e-book can be downloaded instantly via Internet to a smartphone, tablet or personal computer.

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