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1-7 of 7 Results
  1. Grizzly Engine & Transmission
    I have a 1998 Yamaha Grizzly 600 YFM600FWA 4WV5-010 here which I believe has the Miknuni Corp BST40/1 4WV 00 carby. The bike is in some disrepair and has come to me not with starting and idling issues (I found the inlet valve clearances to be way out). While doing this I've observed that the air...
  2. Grizzly Engine & Transmission
    I'm looking into upgrading my carb to the hsr45. Anyone have any thoughts?
  3. Parts For Sale
    I pulled a BSR33 off my 07 Grizzly 350, and replaced with a brand new one. I believe this is the correct carb for 07-14 Grizzly models. Before it was removed from the ATV I could get it to run with choke wide open, but fuel was leaking from left side of the carb out of a drain line that dumps...
  4. Grizzly Dyno/Tuning
    Ok to anyone thats actually did the slide mod and mikuni jets..Is there a link out there for pic and drill bit sizes for mod..What does this mod do for an engine..I'm reading cut 3.5 coils and read plug chops to jet for filter and exhaust..Makes sense...My carb seems to be a bit touchy wishy...
  5. Industry News
    NORTHRIDGE CA - August 31, 2011 - Air flows faster, smoother through the TM Series Read More at
  6. Grizzly Engine & Transmission
    Mikuni carburetor operation and tuning WayUpNorth posted that elsewhere in cyber-space....I haven't had the time to read it all....and most of it I'd read elsewhere....but it's good...informative...Mack on the Jet kit...Well I guess 6 of one...It is preference...I'd still go with one...I fully...
  7. Grizzly Dyno/Tuning
    Okay so I installed my HMF performance series slip on today. I pulled the carb, drilled out the brass plug over the fuel screw (carefully), installed new mikuni 140 main jet (stock is 131) and set fuel to 2.5 turns out. Reinstalled carb and fired her up and she was idleing real nice as is so I...
1-7 of 7 Results