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What is an acceptable gap for the coupler when installing an engine? I mocked it up today and had about 1/2" of open space all around. I'm running a full 61x in a SN. Should I just put the bolts in and see how far back I can slide the engine or start looking at the midshaft first? How far should...

In the process of rebuilding my engine. It's a 6m6 bottom end with 61x top. When I took it apart I noticed that one of my exhaust ports has a chunk missing. The metal isn't in my waterbox so it must have made it out at some point. I want to get a new top end so I have started looking for 61x...

I sunk my ski in Lake Michigan when I was riding this afternoon. Got home and pulled the plugs, engine was full of water. My ski broke down on the beach before it sank (filled up getting towed in). The solenoid clicks when I hit the starter but it won't crank. All connections outside the Ebox...

Took my ski to the lake to tune this weekend. Everything was running fine, came in after an adjustment and the ski wouldn't turn over when I tried to start it again. While I was at the lake all it would do was click once when I hit the start button. Got it home and tried again to find out that...

Went riding yesterday and everything was running fine. About halfway through the tank of gas my ski started hesitating when I hit the throttle. A few minutes later it just died when I pinned it. Checked the in-line fuel filters and they were good. Checked out the needle, seat, jets and filter in...

I just swapped out carbs on my 90 sn so I could replace a choke with a primer. Idle screw is turned all the way out but the engine revs like at full throttle. Is this a tuning issue or is there something wrong with the carb? I'm running a 61x/6n6 with b-pipe and Mikuni single 44.

Looking for a start/stop switch for my sn.

Just bought a modded 90 SN and took it out for the first ride of the season this past weekend. Rode for about 15 min before I realized I was running on one cylinder so we pulled it out of the water. When we got back home we took a look and one of the plug caps was partially disconnected...

Just bought a modded 90 SN and took it out for the first ride of the season this past weekend. Rode for about 15 min before I realized I was running on one cylinder so we pulled it out of the water. When we got back home we took a look and one of the plug caps was partially disconnected...

Parting out my conversion ski: 750 engine (needs top-end rebuild) - $300 Mikuni Single SBN 44 w/750sx Manifold - $150 JS550 Kerker Pipe - $100 West Coast 6 gal Gas Tank - $100 750sx Electronics w/ Ebox - $150 Solas 14/17 Impeller - $125 JS 550 Stock Waterbox - $25 550-750 RCJS Aluminum...

My 550 conversion ski won't draw any fuel. Engine is a bored out 750sx. Rebuilt the carb, checked the lines for clogs and didn't find any. When I blow through the pulse line air comes back out through the top of the carb, so I'm thinking the reeds are bad. Reeds don't look great but for the...

My 550 conversion ski is having a starting issue. Starts right up on the trailer, starts first time in the water no problem, but once the ski shuts down on the water it takes 30 min to start again. I've been able to get it started like this several times, but my last time out the battery died...