Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
pinkfloyd4ever

98 Yamaha F50

7 posts in this topic

Hopefully I can explain this good enough to understand on the above motor. This all started after the opener, on opening day it ran completely fine, the next time I took it out it started doing this mid-trip.

Starts fine, idles fine. I put into gear and until I hit 3K RPM it runs real rough, when it hits 3K and above it seems like it is running just fine. Wether the motor is hot or cold it is the same result.

I have changed plugs, changed gas, sea foam, cleaned fuel filter. Removed prop just to make sure the bearings were ok and nothing wrapped in there, both fine. So I am at a loss now. All in all it is more of an annoyance but on the other side, I don't know if I am doing any sort of damage to the motor. Any suggestions would be appreciated

Share this post


Link to post
Share on other sites

Have you treated it with Yamalube Ring Free? If not try that. Other wise you might have to clean the carbs and/or resink. By the way I have the exact same motor. Mine ran ruff at idle and it had some water in the carbs.

Share this post


Link to post
Share on other sites

I haven't tried the Yamalube. As a weekend project is doing carb cleaning a somewhat easy task for a notch above a novice mechanic?

Share this post


Link to post
Share on other sites

Can someone else chim in on this one? crazy I know how to do it, but can't explain. It shouldn't take to long to do. whistle On a different note, the ring free is some pretty spendy stuff. I use it once a year. Just follow the directions on the bottle.

Share this post


Link to post
Share on other sites

If you have some basic mechanical skills, you should have no problem. Pay attention when disassembling to where things go, clean carb thoroughly, reassemble.

Share this post


Link to post
Share on other sites

Make sure you count the number of turns on each carb to bottom the jets out and reset them to the same spot when you're done. If you don't the synch between the carbs will be out of adjustment and you could have similar symptoms.

marine_man

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • If this crazy weather keeps up a guy might have to go to the mountains to have enough snow to ride.
    • I purchased a 20v 986 Dewalt brushless and used it with my Nils 8" and could not believe how fast it cut. Very close to my Tanaka motor as far as speed. My plan is to use it with my 6" Nils but wanted to give it a good test and it passed with flying colors. 
    • Pretty sure Bernie had that figured out. After the primaries I voted for "not Trump" You guys haven't picked up that liberals are still going for not Trump, even if that means Mike Pence (who from a political position standpoint is worse for liberals).   Instead you have Trump, a man incapable of taking any form of criticism regardless of how irrelevant it is to anything. Why do I post the crowd sizes? Because Trump, in a speech given only to members of the CIA, thought it was important enough to mention, as well as to have a team of his own people there to applaud when he mentioned the size of the crowds.
    • Here's the exact reason why I encourage everyone to buy the digital readout.  After getting holes drilled and everything setup, I always run my bathroom roof fan/vent to get rid of the moisture as the slush on the floor gets melted.  Yesterday I cranked the fan on max which moves some serious air, but I forgot to crack a window, which caused it to actually suction the CO from my water heater back into the house through a propane line pass through.  I looked up and saw 30ppm on the CO detector, which isn't high, but an indicator that something wasn't right.  All it took was cracking a window and turning down the fan for a minute and it was back to 0.  
    • You do realize the person you wanted to be president couldn't even understand the proper protocol for setting up a cabinet level email account don't you?    
    • I looked into fiberglass a few years back for a build.  I decided against it as it needed a wood backer.  Not sure if there is a different product out there now.  
    • finally got out Friday, put on 75 miles in the heavy drizzle, not the first time I have riden in the rain. the trails were OK, I rode in aitkin co. that doubles the miles I put on in the last two years.
    • they load tested the battery and said it was bad, everything else they said was fine, they put in a new battery. tried it today after sitting since Tuesday, and it started up fine, problem fixed.   I have a 2002 grizz carbed, and that sat for close to 3 months, went to start it this weekend, and it cranked for at least a minute (very cold blooded machine) and it started, it has the same battery that's in the Polaris.
    • Precious snowflake Trump needs a safe space from the media apparently.   I suggest you familiarize yourself with the word kakistocracy, because that appears to be the road we will be traveling down.
    • No,I am saying those who are left with jobs are working for those who Obama is happy to give money to for nothing. He was as bad as it gets in terms of getting people back to work after a recession especially when you factor in the amount of money he spent to do it.
  • Our Sponsors