Arctic Cat VLX 70002017, Service Manual

Page: 32 / 138

31
Engine/Transmission
This section has been organized into sub-sections which
show a progression for the complete servicing of the
engine/transmission.

NOTE: Use new gaskets, lock nuts, and seals and
lubricate all internal components when servicing the
engine/ transmission.

NOTE: A new ATV and an overhauled ATV engine
require a “break-in” period. The first 10 hours (or
200 miles) are most critical to the life of this ATV.
Proper operation during this break-in period will
help assure maximum life and performance from the
ATV. Instruct the customer to follow the proper
break-in procedure as described in the Operator’s
Manual.
SPECIAL TOOLS
A number of special tools must be available to the techni-
cian when performing service procedures in this section.
Refer to the current Special Tools Catalog for the appro-
priate tool description.

NOTE: When indicated for use, each special tool
will be identified by its specific name, as shown in the
chart below, and capitalized.
 NOTE: Special tools are available from the Service
Department.
Specifications

NOTE: Specifications subject to change without notice.
Description p/n
Clutch Sleeve Hub Holder 0444-007
Connecting Rod Holder 0444-006
Crankcase Separator/Crankshaft Remover 0444-152
Driven Pulley Compressor 0444-121
Driven Pulley Compressor 0444-140
Magneto Rotor Remover Set 0444-254
Oil Filter Wrench 0644-389
Piston Pin Puller 0644-328
Seal Protector Tool 0444-252
Spanner Wrench 0444-240
Surface Plate 0644-016
Valve Clearance Adjuster 0444-255
V Blocks 0644-535
VALVES AND GUIDES
Valve Face Diameter (max) (intake)
(exhaust)
31.6 mm
27.9 mm
Valve/Tappet Clearance (intake)
(cold engine) (max) (exhaust)
0.1016 mm
0.1524 mm
Valve Guide/Stem Clearance (max) 0.013 mm
Valve Guide Inside Diameter 5.000-5.023 mm
Valve Head Thickness (min) 2.3 mm
Valve Seat Angle 45° +15’/+30’
Valve Spring Free Length (min) 38.65 mm
Valve Spring Tension @ 31.5 mm 16.3 kg (35.96 lb)
CAMSHAFT AND CYLINDER HEAD
Cam Lobe Height (min) 33.53 mm
Camshaft Journal Holder (right & center)
Inside Diameter
(left)
21.98-22.04 mm
17.48-17.53 mm
Camshaft Journal Outside (right & center)
Diameter
(left)
21.96-21.98 mm
17.48-17.53mm
Camshaft Runout (max) 0.05 mm
Cylinder Head/Cover Distortion (max) 0.05 mm
CYLINDER, PISTON, AND RINGS
Piston Skirt/Cylinder Clearance (max) 0.019-0.053 mm
Piston Diameter 10 mm from Skirt End 101.955-101.973 mm
Cylinder Bore 101.992-102.008 mm
Piston Ring Free End Gap (1st/2nd) 12.5 mm
Bore x Stroke 102 x 85.0 mm
Cylinder Trueness (max) 0.02 mm
Piston Ring End Gap - Installed (min) 0.38 mm
Piston Ring to Groove (1st/2nd)
Clearance (max)
0.065 mm
Piston Ring Groove Width (1st/2nd)
(3rd)
1.22-1.24 mm
2.51-2.53 mm
Piston Ring Thickness (1st/2nd) 1.225-1.240 mm
Piston Pin Bore (max) 23.012 mm
Piston Pin Outside Diameter (min) 22.99 mm
CRANKSHAFT
Connecting Rod (max)
(small end inside diameter)
23.021 mm
Connecting Rod (big end side-to-side)
(max) 0.80 mm
Connecting Rod (small end deflection)
(max) 0.3 mm
Crankshaft (web-to-web) (max) 71 mm
Crankshaft Runout (max) 0.20 mm (0.008”) PTO
0.25 mm (0.010”) MAG