Move and hold throttle lever in full-open position. Remove water pump base using flat screwdrivers to lightly pry up on base. Remove drive shaft, pinion gear, pinion bearing and forward gear. Replace drive shaft if splines are worn or twisted. Replace plate if groove s other than impeller sealing bead groove in plate are more than 0.
Replace cover if thickness of steel at the discharge slots is 0. Replace pinion gear if it is chipped or worn. Replace forward gear needle bearing if it is rusted or does not roll freely. Replace thrust bearing and thrust washer if rusted or damaged. Replace forward gear bearing and race if either are rusted, pitted or damaged, or if bearing does not roll freely. These can be diagnosed by a compression test, or by tracing top-end noise with a sounding rod or stethoscope.
If bearing surface is damaged, replace drive shaft and corresponding bearing. If you dont know the source of the trouble, go to the troubleshooting page located at the end of the manual for a list of causes and effects to determine the problem. Apply constant pressure to cam follower in order to prevent it and internal components from ejecting out of the propeller shaft during removal of the cross pin from the clutch. Follow the Maintenance Schedule recommendations to ensure that the engine is in peak operating condition. .
Replace cam follower if worn or pitted. Install compression gauge hose attachment into plug hole, then connect compression gauge hose to gauge hose attachment and compression gauge. Bearing Carrier and Propeller Shaft 1. Lift reverse gear, thrust bearing and thrust washer from bearing carrier. It compensates for the initial wear that occurs during the life of the outboard motor. Use a punch and hammer to remove bearing.
Performing the scheduled maintenance is very important. If reverse gear must be replaced, pinion gear and sliding clutch should be inspected or damage. Remove and discard rubber ring. Prop shaft trueness should be measured with a dial indicator with prop shaft on V-blocks. Replace pinion bearing and race if either are rusted, pitted or damaged; or if bearing does not roll freely. Replace forward gear if gear teeth or clutch teeth are chipped or worn.
Disconnect remote control throttle cable from throttle lever. With propeller shaft horizontal, pull carrier using tool shown to break seal with gear housing. Exact Models Covered Covers All 1996-1997 Models World Wide : F8B F8-B , F9. Replace sliding clutch if jaws are rounded or chipped. Remove components from propeller shaft.
This will prevent any residual fuel discharged from the cylinders being ignited by a spark discharge from the spark plug caps. A very easy simple download at a great price! V6 3130cc 2-stroke 1994, 225 hp 90 deg. Use suitable tools screwdriver and awl to remove retaining ring. The Yamaha outboard motor service manual downloads for the above listed models describes the service procedures for the complete engine. Replace reverse gear if gear teeth or clutch teeth on reverse gear are rounded or chipped.
If the bearing needs to be replaced remove it using Slide Hammer 91-34569A1. The subsequent pages give detailed procedures. Remove propeller shaft seals if not removed with bearing in Step 9 and bearing carrier O-ring. Disconnect the safety lanyard from the emergency stop switch prior to cranking the engine. Compression gauge Compression gauge hose Compression gauge hose attachment 5.
Remove propeller shaft from bearing carrier. After Payment you will be redirected to the download page. Start engine and allow to warm up, then shut engine off. Most all service manual chapters start with an assembly or system illustration, diagrams, exploded parts view, quality pictures, service information and troubleshooting for the section. The subsequent pages give detailed procedures.
Remove 4 screws 2 on each side of water pump housing , washers, and isolators. If wear sleeve is deeply grooved allowing water to enter gear case, remove and discard sleeve using Universal Puller Plate 91-37241 and mallet. While cranking engine with starter motor, note maximum compression pressure reading on gauge for each cylinder. Lift impeller, drive key, and gasket from drive shaft. Take care not to lose cam follower or 3 metal balls in end of propeller shaft. Replace water tube seal, if damaged.