Kuryakyn 6387 CRUISE-MATE MOTORCYCLE THROTTLE CRUISE ASSIST - Manual

23 Cedarhill Rd.
Bellingham, MA 02019
877-642-3722
- 1 -
INSTALLATION INSTRUCTIONS, HARLEY-DAVIDSON
NOTE; PLEASE BE VERY CAREFUL WHEN HANDLING SMALL PARTS IN CRUISE-MATE
PACKAGE, SPRING AND SHOULDER SCREW ARE VERY HARD TO FIND IF DROPPED.
1. Loosen throttle return cable adjusting jam nut and back off cable adjusting nut (fig 1).
2. Install a 5/32 shim (cardboard shim or Allen wrench works fine) in brake lever as shown in (fig. 2).
a. This step is important to avoid damaging the brake light switch.
3. Remove the 2 bolts holding switch housing halves together and loosen two bolts holding master cylinder halves to
handlebar.
4. Separate top half of switch housing from bottom half.
5. Remove cables from grip (fig 3) being very careful not to loose brass cable end ferrules.
6. Remove forward cable from switch assembly.
a. Applying a small amount of oil (we use WD 40) around cable end inside switch housing cavity and wiggling cable
while gently pulling down will help remove cable from switch assembly.
7. Remove throttle lock plastic friction shoe from inside lower half of switch housing (fig.4), friction shoe not reused.
8. Remove “C” clip from thumbscrew stud (fig. 5).
9. Remove thumbscrew from switch housing.
The next two steps involve enlarging the original thumbscrew hole. We STRONGLY recommend using our drill
jig (included with Cruise-Mate kit) to drill and tap your switch housing.
10. Insert drill jig ¼ bolt into the forward cable hole in switch housing. Install washer and nut and hand tighten (see jig
assembly figure below).
11. Install alignment pin in drill jig, screw pin into original thumbscrew hole in lower switch housing then tighten 1/4 jig bolt
wrench tight.
12. Remove alignment pin from drill jig and install plastic guide bushing in place of pin. Using plastic bushing as a guide
for drill bit, carefully drill original hole with 21/64-drill bit.
13. Remove plastic bushing from drill jig and using hole in jig to guide tap straight, tap the newly drilled hole with 3/8-24
tap.
CAUTION;

be sure to remove all metal chips from switch housing before proceeding with CRUISE-MATE
installation.
15. Apply Loctite to the 3/8-24 threads of stainless steel bushing on Cruise-Mate cartridge and install cartridge into the
3/8-24 threaded hole (fig. 6).
a. Caution; over tightening bushing may strip threads in switch housing.
16. Unscrew Cruise-Mate insert until pressure is removed from spring.
SPECIAL NOTE FOR 1982-1995 HARLEY; Remove insert and wave spring from Cruise-Mate bushing and install round
spacer on insert, replace wave spring and reinstall insert into bushing (see parts list below).
17. Replace throttle cables in switch housing and re-assemble control.
a. Before reinstalling grip, check to see if there is a raised line on the bottom of plastic throttle tube (raised line left
from molding process), if there is a noticeable line remove with file of sandpaper.
b. When re-assembling brake and switch housing assemblies, ensure tab on switch housing mates with notch in
brake housing assembly (fig 7).
18. Return cable-adjusting nut to original position and tighten adjuster jam nut.
19. Screw CRUISE-MATE cartridge into switch housing until you feel resistance then stop and install CRUISE-MATE
handle, spring and bolt.
a. Apply a drop of LocTite to threads of handle shoulder bolt to ensure bolt won’t vibrate out.
You are now ready to adjust CRUISE-MATE for operation. Once installed, CRUISE-MATE is extremely reliable and easy
to operate. Simply push lever forward (towards front of bike) and set your throttle where you want it. Push lever all the way
toward rear of bike and throttle returns to normal operation. See adjustment procedures below.