Husqvarna FS 413 Operator's Manual page 28

Blade Shaft Drive Belt Tension: Drive Belt should be
re-tensioned after first few hours of operation. Belt Drive
Idler (MM) holds tension on Drive Belt.
Tools Required:
• mm Wrench (Included with machine).
• /8" (9.mm) Drive Torque Wrench (Not Included)
• mm Wrench (Not included with machine).
. Use mm Wrench (U), to remove three () M8 bolts
that attach Belt Guard (LL). Remove Guard (LL).
. Use the mm & mm wrenches to slightly loosen the
two () bolts that secure the Belt Drive Idler (MM) [bolts
indicated by () arrows].
. Attach Torque Wrench to square hole in Belt Drive Idler
(MM).
. Apply a torque to Drive Idler (MM) so that Drive Idler
(MM) is forced against the V-Belt. Torque to the value
shown in diagram .
. Tighten center bolt (CB) to hold Drive Idler (MM) in
position, then tighten remaining bolt (CB).
. Reinstall Belt Guard (LL). Use mm Wrench (U), to
tighten three () M8 bolts that attach Belt Guard (LL).
Governor Speed
It is critical that Governor and throttle on all internal
combustion engines be adjusted properly. Engine speed
is preset at factory for proper sawing speed. It is NOT
normally necessary to change this setting. It should be
periodically verified after machine is placed into service.
To change the Governor setting, refer to the engine
manual.
Overspeeding Diamond Blade (H) can result in
blade breakage and/or personal injury to operator
and bystanders! To assure proper Governor
adjustment, determine correct blade shaft speed
(RPM) from the adjacent chart. Follow engine
manufacturer's instruction procedure for Governor
and throttle setting.
8
MAINTENANCE & LUBRICATION
WARNING!
Blade Shaft & Engine Speed
Model Blade Shaft
RPM
FS  00
Engine
RPM
00