Timing marks on rotax 912 camshaft and crank.

by farid jan in 912 / 914 Technical Questions 12 years ago

Hi, I am new to forum. Need some help about the timing marks on camshaft and crankshaft gears on a rotax 912 uls engine. And also , camshaft for 80 hp and 100 hp is the same or different. Any quick will be highly appreciated.

Re: Timing marks on rotax 912 camshaft and crank.

by MARK JACKSON » 12 years ago

MARK JACKSON

12 332 11

Hi Farid

The only timing marks are when No.1 cylinder is at top dead centre, the line scribed on the camshaft gear is inline with the crankcase joint.

The camshafts are different on 912 and 912s engines.

Mark

IMG_1299.JPG (You do not have access to download this file.)

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Re: Timing marks on rotax 912 camshaft and crank.

by farid jan » 12 years ago

farid jan

1 3 0

Hello Mark, thanks for the info.
Mark, there is another mark on the crank gear as well. whats that for?

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Re: Timing marks on rotax 912 camshaft and crank.

by MARK JACKSON » 12 years ago

MARK JACKSON

12 332 11

Im not sure what you mean, have you got a pic.

Mark

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Re: Timing marks on rotax 912 camshaft and crank.

by farid jan » 12 years ago

farid jan

1 3 0

Sorry, I dont have pic as I have partially assembled the engine now. I mean the gear on the crankshaft which joins with the gear on the crankshaft. So there is a mark on the crankshaft gear as well. But today I checked the way you mntioned. Both ways its ok. if you allign both the marks on camshaft gear and crankshaft gear or allighn the camshaft mark with the engine joint and keep the piston on TDC. Thanks for help.

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Timing marks on rotax 912 camshaft and crank.

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