CVT ASSY(HIGHLAND)

CVT System Maintenance Guide

The engine is equipped with the continuously variable transmission (CVT) system, which uses the drive belt and pulleys for variable transmission. By changing the contact radius between the drive/driven pulley and the drive belt, the transmission ratio can be changed continuously.

Main System Components:

Drive Pulley - Mounted on the engine crankshaft
Driven Pulley - Mounted on the transmission input shaft
Drive Belt - Heavy-duty V-shaped belt that connects the drive and driven pulleys

Installation & Cooling:

The drive pulley, driven pulley and drive belt are installed in the CVT box and CVT box cover, and cooling is achieved by circulating air through the inlet and outlet cooling pipes, which should be checked frequently.

WARNING: Never touch CVT while engine is running. Never drive vehicle when CVT cover is removed.

WARNING: Any drive pulley repairs must be performed by an authorized CFMOTO dealer. Subcomponent installation and assembly tolerances require strict adherence to procedures detailed.

WARNING: The clutch assembly is a precisely balanced unit. Never replace parts with used parts from another clutch assembly.

Routine Maintenance Check:

During routine maintenance, or whenever CVT system overheating is evident, it's important to check the inlet and outlet duct for obstructions. Obstructions to air flow through the ducts will significantly increase CVT system operating temperatures. The vehicle should be operated in Low when extended low vehicle speed operation is anticipated.

Clutch Drive Belt & CVT Case Cover Related Issues - Diagnosis:

Possible Causes	Solutions / What to Do
Loading the vehicle into a tall trailer when in high range.	Shift transmission to Low during loading of the vehicle to prevent belt burning.
Starting out going up a steep incline from a stopped position.	When starting out on an incline, use Low gear. Shift transmission to Low during loading of the vehicle to prevent belt burning.
Driving at low RPM or low ground speed (at approximately 3~7 MPH).	Drive at higher speed or use Low. The use of Low is highly recommended for cooler CVT operating temperatures and longer component life.
Insufficient engine warm-up when exposed to low ambient temperatures.	Warm engine at least 5 min., then with transmission in neutral, advance throttle to approx. 1/8 throttle in short bursts, 5 to 7 times. The belt will become more flexible and prevent belt burning.
Slow and easy clutch engagement.	Fast, effective use of the throttle for efficient engagement.
Stuck in mud or snow.	Shift the transmission to Low, carefully use fast, aggressive throttle application to engage clutch.
Climbing over large objects from a stopped position.	WARNING: Excessive throttle may cause loss of control and vehicle overturn. Shift the transmission to Low, carefully use fast, aggressive, brief throttle application to engage clutch.
Water ingress in CVT chamber.	Remove CVT cover drain bolt. Put the gearbox into neutral and run the engine at 2000r/min for a few minutes to dry out the CVT chamber. Repeat several times as required. If leakage occurs repeatedly, check the CVT cover seal ring for damage.
Clutch malfunction.	Clutch component inspection should be performed by a CFMOTO certified technician.
Poor engine performance.	Fouled spark plugs, foreign material in fuel tank, restricted fuel lines, or faulty fuel pump may cause symptoms similar to clutching malfunction.

Gear Usage Guidelines:

Operating in Low Gear

Low gear should be used when riding through rough terrain or when basic operational ground speeds are less than 7 MPH. Use High gear when basic operational ground speeds are more than 7 MPH.

NOTE: Using High gear for heavy loads, hilly terrain, sand/dune environments, or in wet, muddy conditions will increase the chance of drive belt burning.

General Sand / Dune Driving

The use of Low gear when continuously operating at speeds less than 30 mph will greatly increase belt life in sand/dune environments.

NOTE: Do not shift from Low to High without coming to a complete stop.

CVT Draining Steps:

Remove CVT cover drain bolt and O-ring
Drain water from the CVT chamber
Reinstall CVT cover drain bolt and O-ring

NOTE: If muddy or dirty water enters the CVT chamber, clean and check all CVT components.

Wet CVT Drying Steps:

After draining the water from the CVT chamber, shift the vehicle gear to neutral
Run the engine at 2000r/min for a few minutes to dry the residual water
Then use the low gear to test whether the CVT function is normal, repeat the steps of drying water and re-test if necessary
If the CVT system is still slipping or underperforming, contact your dealer for inspection and repair

Removal Steps:

NOTE: If the drive belt fails, clean the CVT, CVT case, CVT case cover, and air inlet/outlet.
Remove CVT case cover
Screw the driven pulley fixed sheave and sliding sheave separating tool or other appropriate M8 bolt into the threaded hole of the three-lug pad disc
Continue to screw in the separating tool to separate the driven pulley fixed sheave and sliding sheave
NOTE: When separating driven pulley sliding sheave and driven pulley fixed sheave, ensure the axial clearance between the guide block and the cam is not less than 5 mm to prevent damage to the parts.
To remove the belt, slide the belt over the top edge of driven pulley fixed sheave and remove it, as shown on the right
NOTE: If there is no arrow indicating the direction of rotation on the driving belt, please make a mark when removing it to avoid the wrong direction of installation.

Inspection Steps:

Inspect drive belt for oil stain or damage
Inspect belt contact surface for cracks or damage
Use vernier caliper to check belt width at belt core line
Replace with a new belt if damaged or beyond service limit

Drive Belt Width Limit:

NOTE: Clean the belt thoroughly if oil stain or grease adheres to belt surface.

Replacement Steps:

Replace faulty belts or belts exceeding wear limits with new belts
Reverse the removal procedures for installation
NOTE: Before installing the belt, use driven pulley fixed sheave and sliding sheave separating tool or other appropriate M8 bolt to push out driven pulley fixed sheave and sliding sheave.
After installing the belt, be sure to remove the separating tool
Turn the driven pulley 1~2 turns counterclockwise by hand to pre-tighten the drive belt
Install CVT case cover

If you are unable to find the corresponding parts for the catalog, please contact us.

Image/No	Product	Price
31	Guide Block Assy - Model: MICF0GSV-052220-1100 - Stock：In Stock	US$5.80
1	MICF0NYV-054000-3000
2	MICF0NYV-040020-1000
3	MICF0NYV-052101-2000
4	MICF0NYV-052100-3100
5	MICF0NYV-052110-3000
6	MICF0NYV-052120-3000
7	MICF0NYV-052131-3000
8	MICF0NYV-052135-3000
9	MICF0NYV-052136-3000
10	MICF0NYV-052137-3100
11	MICF0NYV-052141-3000
12	MICF0NYV-052150-3000
13	MICF0NYV-052160-3000
14	MICF0NYV-052101-3000
15	MICF0NYV-052102-3100
16	MICF0NYV-052103-3000
17	MICF0NYV-052104-3000
18	MICF0NYV-052105-3000
19	MICF0NYV-052106-3000
20	MICF0NYV-052107-3000
21	MICF0NYV-052108-5000
22	MICF0NYV-052109-5000
23	MICF0NYV-052201-3000
24	MICF0NYV-052202-3000
25	MICF0NYV-052203-2000
26	MICF0NYV-052200-3000
27	MICF0NYV-052230-3000
28	MICF0NYV-052211-3000
29	MICF0GSV-052202-1100
30	MICF0GSV-052201-1100
32	MICF0NYV-052220-3000
33	MICF0NYV-052240-3000
34	MICF0NYV-052203-3000
35	MICF0NYV-052204-3000
36	MICF0NYV-052206-3000
37	MICF0NYV-052205-3000