Beartracker250
Mar 21, 2019 | 08:05 PM
#1
Thread Starter
|
Weekend Warrior
Joined: Mar 2019
Posts: 3
Likes: 0
Beartracker250
Have a bear tracker 250, want to know if these are just cold natured beasts, here's why. After start-up, I let run for 5 minutes. When I take off, and give throttle to accelerate to next gear, it just won't take the gas, like its faltering. BUT after about a mile down the trail you couldn' ask for a better performing machine. Good maximum throttle response, plenty of power, runs great. The valves were a little sloppy, set intake on kind of a tight 3 thou, the exh on tight 5. Made no difference, I thought it would. So, are the 1999 bear trackers just that cold natured?
Mar 22, 2019 | 04:57 AM
#2
Elite Pro Rider
Joined: Oct 2013
Posts: 7,483
Likes: 387
From: Lancaster England
A long time since I worked on one, and the fuel in the carb was bright green from dissolving the jets, as it had stood so long, so I wasn't expecting sparkling performance from the word go. However the symptoms you quote are slightly weak air/fuel mixture, probably due to a partly blocked jet, but Yams are well known for cracked inlet manifolds, which let a little extra air in, so check that too.
Mar 22, 2019 | 06:38 AM
#3
Pro Rider
Joined: Apr 2017
Posts: 234
Likes: 0
Have a bear tracker 250, want to know if these are just cold natured beasts, here's why. After start-up, I let run for 5 minutes. When I take off, and give throttle to accelerate to next gear, it just won't take the gas, like its faltering. BUT after about a mile down the trail you couldn' ask for a better performing machine. Good maximum throttle response, plenty of power, runs great. The valves were a little sloppy, set intake on kind of a tight 3 thou, the exh on tight 5. Made no difference, I thought it would. So, are the 1999 bear trackers just that cold natured?