. The Yamaha outboard motor service manual downloads for the above listed models describes the service procedures for the complete engine. Disconnect safety lanyard switch plate from emergency stop switch. Remove 4 screws 2 on each side of water pump housing , washers, and isolators. Take care not to lose cam follower or 3 metal balls in end of propeller shaft. If wear sleeve is deeply grooved allowing water to enter gear case, remove and discard sleeve using Universal Puller Plate 91-37241 and mallet. If bearing is rusted or does not roll freely, replace bearing.
While cranking engine with starter motor, note maximum compression pressure reading on gauge for each cylinder. Remove and discard rubber ring. Move and hold throttle lever in full-open position. Remove bearing from gear using Universal Puller Plate 91-37241 and mandrel. Remove propeller shaft seals if not removed with bearing in Step 9 and bearing carrier O-ring.
Prop shaft trueness should be measured with a dial indicator with prop shaft on V-blocks. Performing the scheduled maintenance is very important. Remove bearing and then sleeve using Puller Assembly 91-83165M with suitable jaws. 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. With propeller shaft horizontal, pull carrier using tool shown to break seal with gear housing.
Replace pinion bearing and race if either are rusted, pitted or damaged; or if bearing does not roll freely. Replace forward gear needle bearing if it is rusted or does not roll freely. Performing the scheduled maintenance is very important. The subsequent pages give detailed procedures. If the performance is poor at low speeds, check for a white smoke in the crankcase breather tube. Replace thrust bearing and thrust washer if rusted or damaged. Remove water pump base using flat screwdrivers to lightly pry up on base.
Start engine and allow to warm up, then shut engine off. Lift impeller, drive key, and gasket from drive shaft. Replace forward gear bearing and race if either are rusted, pitted or damaged, or if bearing does not roll freely. Replace water tube seal, if damaged. Replace reverse gear if gear teeth or clutch teeth on reverse gear are rounded or chipped. 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.
Bearing Carrier and Propeller Shaft 1. Use suitable tools screwdriver and awl to remove retaining ring. Hold drive shaft using Drive Shaft Holding Tool; remove and discard pinion nut. Remove propeller shaft from bearing carrier. Replace upper drive shaft bearing and sleeve if either are rust stained, or if bearing will not roll freely. The subsequent pages give detailed procedures. Replace pinion gear if it is chipped or worn.
It compensates for the initial wear that occurs during the life of the engine. Follow the Maintenance Schedule recommendations to ensure that the engine is in peak operating condition. Replace forward gear if gear teeth or clutch teeth are chipped or worn. Compression gauge Compression gauge hose Compression gauge hose attachment 5. Use a punch and hammer to remove bearing.
Lift reverse gear, thrust bearing and thrust washer from bearing carrier. After Payment you will be redirected to the download page. If the bearing needs to be replaced remove it using Slide Hammer 91-34569A1. Remove drive shaft, pinion gear, pinion bearing and forward gear. These can be diagnosed by a compression test, or by tracing top-end noise with a sounding rod or stethoscope.
Remove components from propeller shaft. Install compression gauge hose attachment into plug hole, then connect compression gauge hose to gauge hose attachment and compression gauge. It compensates for the initial wear that occurs during the life of the outboard motor. Disconnect remote control throttle cable from throttle lever. A very easy simple download at a great price! Exact Models Covered Covers All 1996-1997 Models World Wide : F8B F8-B , F9. All service manual chapters start with an assembly or system illustration, diagrams, exploded parts view, quality pictures, service information and troubleshooting for the section.
Replace sliding clutch if jaws are rounded or chipped. If reverse gear radial bearing is rusted or does not roll freely, replace bearing. Replace cam follower if worn or pitted. 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. V6 3130cc 2-stroke 1994, 225 hp 90 deg. Replace drive shaft if splines are worn or twisted.