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#2443 23/09/03 05:55 PM
Joined: Sep 2003
Posts: 3
Gooz Offline OP
Novice
I have had to pull apart my Briggs and Stratton engine Model #92908, type:5389, code/; 89042104 as the oil seals needed replacing. I seem to be able to get the thing bact together but I am unsure of how to mate the crank and cam to assure correct timing. I don't have a manual or anything so am unsure also of the airgap settings etc. If anyone can help, I would be eternally grateful.

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#2444 23/09/03 07:27 PM
Joined: Dec 1999
Posts: 5,334
Likes: 30
Repair Junkie
****
Gooz,
Ok this is what you need to do:

1. The timing marks are located on both the crankshaft gear and the cam gear. It is like a centre punch mark on both gears just line the dot's up and the timing is correct.

2. The air gap is easy just use a normal business card between the coil legs and the magnet on the flywheel.

This should help you with you problems.

Regards,

Bruce [Linked Image]


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
#2445 24/09/03 11:12 AM
Joined: Sep 2003
Posts: 3
Gooz Offline OP
Novice
Thanks very much for the prompt and correct response. I assumed that there would be alignment marks but have not been able to remove the lower boss from the crankshaft to remove the crank from the housing. I need to do this to replace the oil seal. In the process I have stuffed the thread on the crank so I will have to either seek a replacement crank or retap the thread to a larger diameter. Do you know if obtaining a crankshaft is a vaible option before I attack the boss with a grinder. I've tried belting the shaft, using wheel pullers, oxy heat, soaking in penetrene overnight but I think it's pretty well fused onto the end. Can you help on this one?

#2446 24/09/03 06:27 PM
Joined: Dec 1999
Posts: 5,334
Likes: 30
Repair Junkie
****
Gooz,

1. Take motor off frame and if you can put the boss on an anvil or somthing simaliar. Then hit it with a hammer and turn it about a quater of a turn after hitting it and repeat till it becomes loose .

How did you manage to damage the shaft?

Regards,

Bruce [Linked Image]


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
#2447 25/09/03 03:09 PM
Joined: Sep 2003
Posts: 3
Gooz Offline OP
Novice
Thanks Bruce, I tried that and that's how I stuffed the thread. Its pretty well fused on. I put the screw in and belted it with a hammer. I've managed to locate a engine of the same number and code, only the crank is a little longer, it was off a Masport. I'll have it turned down and externally threaded and use a nyloc nut on the thread like the Victa 2-strokes. The crank bearing surface is a little smaller and the piston off the replacemant crank is oversized so I assume that it has been ground since new. With a bit of luck, I'll be able to use my old piston on the replacement conrod. Does this sound viable?


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