Yamaha F50 Service Manual
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62Y3A116-52 1 2 3 4 5 6 7 8 I No. Part name Q’ty RemarksTightening torques Stage N·mkgf·mft·lb 1 Propeller shaft assembly 1 2 Propeller shaft housing assembly1 3Ball 2 4 Slider 1 5 Shift plunger 1 6Cross pin 1 7 Dog clutch 1 8Spring 1 9 Propeller shaft 1 10 Washer 1 11 Straight key 1 12 Claw washer 1 13 Ring nut 1 105 10.5 76 14 Reverse gear 1 15 Thrust washer 1 16 Ball bearing 1 17 O-ring 1 Not reusable 18 Propeller shaft housing 1 19 Needle bearing 1 20 Oil seal 2 Not reusable Propeller shaft housing (T50/FT50B, FT50C)
LOWRLower unit 6-5362Y3A11 Removing the propeller shaft housing assembly 1. Straighten the claw washer tabs a , and then remove the ring nut and claw washer. 2. Pull out the propeller shaft housing assembly. ÈFor USA and Canada ÉFor worldwide Disassembling the propeller shaft housing 1. Remove the reverse gear and thrust washer. ÈFor USA and Canada ÉFor worldwide Gland nut wrench 1 : YB-34447 Ring nut wrench 3 1 : 90890-06511 Ring nut wrench extension 2 : 90890-06513 Bearing housing puller 3 : YB-06207 Universal puller 4 : YB-06117 Bearing housing puller claw L 5 : 90890-06502 Stopper guide plate 6 : 90890-06501 Center bolt 7 : 90890-06504 Slide hammer and adapters 1 : YB-06096 Bearing separator 2 : 90890-06534 Stopper guide plate 3 : 90890-06501 Stopper guide stand 4 : 90890-06538 Bearing puller 5 : 90890-06535 Bearing puller claw 1 6 : 90890-06536
62Y3A116-54 1 2 3 4 5 6 7 8 I NOTE: Install the bearing separator 2 between the reverse gear and thrust washer completely, then the other special service tools. 2. Remove the ball bearing. ÈFor USA and Canada ÉFor worldwide 3. Remove the oil seals and needle bear- ing. Disassembling the propeller shaft assembly 1. Remove the spring 1 , and then remove the cross pin 2 , dog clutch 3 , slider and shift plunger. Checking the propeller shaft housing 1. Clean the propeller shaft housing using a soft brush and cleaning solvent, and then check it for cracks. Replace if necessary. Slide hammer and adapters 7 : YB-06096 Stopper guide plate 8 : 90890-06501 Stopper guide stand 9 : 90890-06538 Bearing puller 0 : 90890-06535 Bearing puller claw 1 A : 90890-06536 Bearing housing needle bearing remover B : YB-06153 Needle bearing attachment B : 90890-06612 Driver handle C : YB-06071 Driver rod L3 C : 90890-06652 Propeller shaft housing (T50/FT50B, FT50C)
LOWRLower unit 6-5562Y3A11 2. Check the teeth and dogs of the reverse gear for cracks or wear. Replace the gear if necessary. 3. Check the bearings for pitting or rum- bling. Replace if necessary. Checking the propeller shaft 1. Check the propeller shaft for bends or wear. Replace if necessary. 2. Check the dog clutch and shift slider for cracks or wear. Replace if necessary. Assembling the propeller shaft assembly 1. Install the dog clutch as shown. NOTE: Install the dog clutch 1 with the “F” mark a facing toward the shift slider. Assembling the propeller shaft housing 1. Install the needle bearing into the propel- ler shaft housing to the specified depth. S62Y6640 S62Y6645
62Y3A116-56 1 2 3 4 5 6 7 8 I ÈFor USA and Canada ÉFor worldwide NOTE: Install the needle bearing with the manufac- ture identification mark a facing toward the oil seal (propeller side). When using the driver rod, do not strike the special tool in a manner that will force the stopper b out of place. 2. Apply grease to the new oil seals, and then install them into the propeller shaft housing to the specified depth. ÈFor USA and Canada ÉFor worldwide NOTE: Install an oil seal halfway into the propeller shaft housing, then the other oil seal. 3. Install the thrust washer 0 and ball bear- ing A to the reverse gear B using a press. ÈFor USA and Canada ÉFor worldwide Driver handle 1 : YB-06071 Bearing housing needle bearing remover 2 : YB-06153 Driver rod SS 3 : 90890-06604 Needle bearing attachment 4 : 90890-06612 Bearing depth plate 5 : 90890-06603 Depth c : 25.0–25.5 mm (0.98–1.00 in) Bearing housing oil seal installer 6 : YB-06269 Driver handle 7 : YB-06071 Ball bearing attachment 8 : 90890-06655 Driver rod LS 9 : 90890-06606 Depth d : 4.5–5.5 mm (0.18–0.22 in) Propeller shaft housing (T50/FT50B, FT50C)
LOWRLower unit 6-5762Y3A11 NOTE: Install the ball bearing with the manufacture identification mark e facing outward (propel- ler side). 4. Install the reverse gear assembly to the propeller shaft housing using a press. Installing the propeller shaft housing 1. Install the washer 1 , propeller shaft assembly 2 , into the propeller shaft housing assembly 3 . 2. Apply grease to the new O-rings.3. Install the propeller shaft housing assem- bly 4 into the lower case, and then install the straight key 5 , claw washer 6 , and ring nut 7 . 4. Tighten the nut to the specified torque. NOTE: Secure the ring nut by bending one tab a into the slot in the ring nut and the other tabs toward the propeller shaft housing assembly. Drive shaft needle bearing depth stop C : YB-34473 Bearing inner race attachment D : 90890-06639 Forward gear bearing cup installer E : YB-06109 Bearing inner race attachment E : 90890-06661
62Y3A116-58 1 2 3 4 5 6 7 8 I Gland nut wrench 8 : YB-34447 Ring nut wrench 3 8 : 90890-06511 Ring nut wrench extension 9 : 90890-06513 Ring nut 7 : 105 N·m (10.5 kgf·m, 76 ft·lb) Propeller shaft housing (T50/FT50B, FT50C)
LOWRLower unit 6-5962Y3A11 Drive shaft and lower case (T50/FT50B, FT50C)6
62Y3A116-60 1 2 3 4 5 6 7 8 I No. Part name Q’ty RemarksTightening torques Stage N·mkgf·mft·lb 1 Drive shaft 1 2 Taper roller bearing 1 Not reusable 3 Bearing outer race 1Not reusable 4 Pinion shim—As required 5 Sleeve 1 6Hose 1 7 Plastic tie 1 Not reusable 8 Joint 1 9Nut 1 10 Water inlet cover 2 11 Screw 1 5 0.5 3.6 12 Seal 1 13 Plate 1 14 Forward gear shim—As required 15 Bearing outer race 1 Not reusable 16 Taper roller bearing 1Not reusable 17 Needle bearing 1 18 Forward gear 1 19 Needle bearing 1 20 Pinion 1 21 Nut 1 : 22 mm 95 9.5 69 22 Lower case 1 Drive shaft and lower case (T50/FT50B, FT50C)
LOWRLower unit 6-6162Y3A11 Removing the drive shaft 1. Remove the drive shaft assembly and pinion, and then pull out the forward gear. Disassembling the drive shaft 1. Install the pinion nut 1 , tighten it finger tight, and then remove the drive shaft bearing 2 using a press. ÈFor USA and Canada ÉFor worldwide CAUTION: •Do not press the drive shaft threads a directly. •Do not reuse the bearing, always replace it with a new one. Disassembling the forward gear 1. Remove the taper roller bearing from the forward gear using a press. CAUTION: Do not reuse the bearing, always replace it with a new one. 2. Remove the needle bearing from the for- ward gear. Drive shaft holder 1 : YB-06049 Drive shaft holder 4 1 : 90890-06518 Pinion nut holder 2 : 90890-06505 Socket adapter 2 3 : 90890-06507 S62Y6850K 1 3 2 Bearing splitter plate 3 : YB-06219 Bearing inner race attachment 4: 90890-06639 Bearing splitter plate 1: YB-06219 Bearing separator 1: 90890-06534 S62Y6740K 1