We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!
Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)
This is the procedure for the 1.8 liter boats. Do you have the service manual? It details the procedure for our MR-1 powered boats. I have been fortunate not to need to use it
I have changed the plugs twice since I have owned the boat and the impellers are perfect, boat has roughly 80 hours on it now - it definitely needs the cables adjusted in my opinion. I do not have a service manual, just the owners manual.This is the procedure for the 1.8 liter boats. Do you have the service manual? It details the procedure for our MR-1 powered boats. I have been fortunate not to need to use it
The only time my boat was showing significantly lower RPMs on one engine I needed to change the spark plugs.
@Bruce Last time I had the boat out at Lake Havasu both engines were running even at 10,000 RPM's, the cables are still off a little bit as far as Starboard could use a little more throw. But having both running at 10K made me happy. Only thing I did to the boat was put on the new speedo pickup which has nothing to do with the throttles.I will find the procedure for you tomorrow. Could you write up the process for others to follow?
I have not had a chance to do it yet, the last couple of lake trips my RPM's were much closer at WOT, they still need a little adjustment to make them identical, I will try to adjust and post a thread over the Winter. Here is the adjustment document if you want to tackle yours before I have time.@AZDANSX230HO I know you are done for the season, but did you get this issue resolved? Do your engines "sync" when throttles are locked together? My mechanical throttles are off by 100rpm at WOT and greater rpms diff. at lower rpm. I guess i will wait till next spring after new plugs, filters and oil etc. installed to test/adjust.
PM'd you my email address, thanks!!