BRP ski-doo MACH Z 1000 SDI, Handbook

Page: 139 / 493

SECTION 05 - ENGINE PREPARATION
MMC2005-001_05A.FM
05-15
1. Jet needle
2. Needle jet
3. Main jet
4. Air jet
MIKUNI VM AND TM TYPE
CARBURETORS
Snowmobile engines are operated under a wide
range of conditions, from idling with the throttle
valve remaining almost closed to the full load (the
maximum output) with the throttle valve fully
opened. In order to meet the requirements for the
proper mixture ratio under these varying condi-
tions, a low-speed fuel system (the pilot system)
and a main fuel system (the main system) are pro-
vided in Mikuni VM and TM type carburetors.
While this text covers the VM-type carb., the TM
flat slide carb. functions the same. The circuits
function the same and tuning a TM would be done
in the same manner as the VM.
4
A01C4BA
3
1
2