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Arm- Governor

Part Number: 16551-ZL8-010
Availability: 3 in stock
Price: $2.99
Ships within 1 business day

*This part replaces obsolete part #: 16551-ZL8-000.

Product Information
Manufacturer: Honda
Product Number: 16551-ZL8-010
Classification: Part
Weight: 0.15 lbs.
Shipping: Ships Worldwide
The governor arm attaches to the throttle return spring and the governor rod. This item is made of metal and is available individually. This part is an OEM from Honda for use in engines and snowblowers. When replacing this part a socket set and an adjustable wrench might be required during the installation process. It will need to be replaced if it becomes broken.
Frequently Purchased With

This part is compatible with the following machines:

GC160 (Type PHA)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type PXA)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type QBC)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type QHA)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type QHA1)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type QHA2)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type QHAJ)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type WKT2)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type WME2)(VIN# GCAH-1000001-9999999) Small Engine
GC160A (Type DEAF)(VIN# GCAHA-8000001) Small Engine
GC160A (Type DHAF)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type MEA2)(VIN# GCAHA-8000001-9999999) Small Engine
GC160A (Type MHA2)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type PHA)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QBC)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QDE)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QEA)(VIN# GCAHA-8000001) Small Engine
GC160A (Type QHA)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QHA1)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QHA2)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QHAF)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type QHAJ)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type VHA)(VIN# GCAHA-1000001-3599749) Small Engine
GC160A (Type VXA)(VIN# GCAHA-1000001-3599749) Small Engine
GC160LA (Type DHAF)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type MHA2)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type MHAB)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QHA1)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QHA2)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QHAF)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QHAJ)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QHC)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type VHA)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type VXA)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LE (Type VXA)(VIN# GCABE-1000001) Small Engine
GC190A (Type DHAF)(VIN# GCAAA-1000001) Small Engine
GC190A (Type MEA2)(VIN# GCAAA-8000001-9999999) Small Engine
GC190A (Type QEAF)(VIN# GCAAA-8000001-9999999) Small Engine
GC190A (Type QHA)(VIN# GCAAA-1000001-7999999) Small Engine
GC190A (Type QHA1)(VIN# GCAAA-1000001-7999999) Small Engine
GC190A (Type QHA2)(VIN# GCAAA-1000001-7999999) Small Engine
GC190A (Type QHAD)(VIN# GCAAA-1000001) Small Engine
GC190A (Type QHAF)(VIN# GCAAA-1000001-1496156) Small Engine
GC190A (Type VBA)(VIN# GCAAA-1000001-7999999) Small Engine
GC190A (Type VXA)(VIN# GCAAA-1000001) Small Engine
GC190LA (Type MHA2)(VIN# GCAAA-1496157-8000000) Small Engine
GC190LA (Type QHAF)(VIN# GCAAA-1496157-8000000) Small Engine
GC160 (Type VHA)(VIN# GCAH-1000001-9999999) Small Engine
GC160 (Type VXA)(VIN# GCAH-1000001-9999999) Small Engine
GC160A (Type QEA2)(VIN# GCAHA-8000001-9999999) Small Engine
GC160A (Type QEAF)(VIN# GCAHA-8000001-9999999) Small Engine
GC160LA (Type QBC)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QDE)(VIN# GCAHA-3599750-8000000) Small Engine
GC160LA (Type QHA)(VIN# GCAHA-3599750-8000000) Small Engine
GC190A (Type MHA2)(VIN# GCAAA-1000001-1496156) Small Engine
GC190A (Type QEA)(VIN# GCAAA-8000001-9999999) Small Engine
GC190A (Type QEA2)(VIN# GCAAA-8000001-9999999) Small Engine
GS190A (Type MBA2)(VIN# GCACA-1000001-9999999) Small Engine
GS190A (Type QBA)(VIN# GCACA-1000001-9999999) Small Engine
GS190A (Type QBA1)(VIN# GCACA-1000001-9999999) Small Engine
GS190A (Type QBA2)(VIN# GCACA-1000001-9999999) Small Engine
GS190A (Type QBAF)(VIN# GCACA-1000001-9999999) Small Engine
GS190A (Type VXA)(VIN# GCACA-1000001) Small Engine
HS520 (Type A)(VIN# SZBG-6000001 to SZBG-6099999) Snowblower
HS520 (Type AA)(VIN# SZBG-6000001 to SZBG-6699999) Snowblower
HS520 (Type AS)(VIN# SZBG-6000001 to SZBG-6099999) Snowblower
HS520 (Type ASA)(VIN# SZBG-6000001 to SZBG-6099999) Snowblower
HS520K1 (Type ASA)(VIN# SZBG-6100001) Snowblower
GS160LA (Type QHAF)(VIN# GCABA-1000001-9999999) Engine
GS190LA (Type QHAF)(VIN# GCACA-1000001-9999999) Engine
GC160LA (Type PHA)(VIN# GCAHA-3599750-9999999) Engine
GC160LA (Type QHG)(VIN# GCAHA-3599750-9999999) Engine
GC190LA (Type QHGF)(VIN# GCAAA-1496157-9999999) Engine
GC190LA (Type QTT)(VIN# GCAAA-1496157-9999999) Engine
GC190LA (Type VBAF)(VIN# GCAAA-1496157-9999999) Engine
FG400 (Type A1)(VIN# GCAJ-1000001-9999999) Tiller
FG500 (Type A1)(VIN# GCAH-1000001-9999999) Tiller
FG500 (Type A2)(VIN# GCAH-1000001-9999999) Tiller
HS720 (Type AMA)(VIN# GCAAA-1000001-9999999) Snow Blower
HS720 (Type AA)(VIN# GCAAA-1000001-9999999) Snow Blower
HS720 (Type ASA)(VIN# GCAAA-1000001-9999999) Snow Blower
WN20 (Type AX1)(VIN# GCAJ-1000001-9999999) Water Pump
WN30 (Type AX1)(VIN# GCAH-1000001-9999999) Water Pump
EN2000 (Type A)(VIN# GCAH-1000001-9999999) Generator
EN2000 (Type AL)(VIN# GCAH-1000001-9999999) Generator
EN2500 (Type A)(VIN# GCAH-1000001-9999999) Generator
EN2500 (Type AL)(VIN# GCAH-1000001-9999999) Generator
EN2500 (Type AL/A)(VIN# GCAHA-1000001-9999999) Generator
EN2500 (Type AN)(VIN# GCAHA-1000001-9999999) Generator
Expand the 89 compatible machines
Products Compatibility

This item works with the following types of products:

  • • Engine
  • • Snowblower
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
1 of 1 people found this instruction helpful
Tool Type:
Parts Used:
Arm- Governor - 16551-ZL8-010
Repair Difficulty:
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set
The arm broke causing the engine to steady idle. The RPMs are supposed to fluctuate when needed to adjust power and with my part being broke it just idled.
First I removed the shroud for the unit
2. Removed tension springs on top and middle of old arm
3. Removed old arm
4. Installed new arm
5. reassemble.
Whole project took all of 8 minutes

Only catch was the two front bolts in the shroud cover have nylon nuts so you have to use a wrench to hold the nut where as the other screws just come out with a screwdriver
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1 of 1 people found this instruction helpful
Tool Type:
Parts Used:
Spring- Governor - 16561-ZL8-810
Arm- Governor - 16551-ZL8-010
Repair Difficulty:
Time Spent Repairing:
30-60 minutes
Tools Used:
Socket set, Adjustable Wrench
Governer arm broke, fuel filter deteriorated.
Honda hs520 snowblower gov arm fix:

1. Remove the cover by unscrewing 6 bolt screws, 2 have locking nuts in front. Need two nut drivers.
2. Remove snow chute, 3 bolt screws, with Phillips, and nut driver.
3. Unscrew Phillips head screw holding gas line shutoff, freeing it from the cover casing at the rear. Disconnect electrical connects by removing two wires from harness retainer, and the pulling apart.
4. Unscrew two bolt screws holding the rear cover to the frame, then remove the rear cover.
5. Using a crescent wrench, loosen the nut on compression fitting on old governer arm. Note position of semi-circular, notch on valve post, as well as depth.
6. Remove governor spring from top and bottom of old governer arm.
7. Remove old governer arm
8. Twist valve arm left and right using crescent on the semi-circular notch of valve arm post, to ensure the spring clip is still properly seated and torqued. Turn arm clockwise until stops.
9. Put new governor arm on a post, attach springs to top and bottom. Note position and depth of post as noted before removing an old one.
10. Tighten down locking nut with a crescent wrench, supporting the arm with counter tension and tighten till the arm bottom gap is almost closed.
11. Move the gov arm to the left to verify free operation.
12. Re-attach rear cover that has electrical, reconnect wires, harness, bolts.
13. Start up and verify correct idle operations.
14. Reattach the main cover, and then chute.
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Thanks for voting and helping fellow customers!
0 of 1 people found this instruction helpful
Tool Type:
Parts Used:
Rod- Governor - 16555-ZL8-000
Arm- Governor - 16551-ZL8-010
Spring- Governor - 16561-ZL8-V50
Repair Difficulty:
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set, Spring puller tool
Governor rod broken, decided to replace spring and rod also.
Removed old parts and installed the new ones in their place. Adjusting the governor arm to the shaft was a bit tricky, but online instructions helped.

All parts received for all of my orders were perfect, with the exception of the governor spring in the most recent order. I tried to use it but it was longer and much heavier duty than the original. The original was still usable so I put that back in.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Product Information
Manufacturer: Honda
Product Number: 16551-ZL8-010
Classification: Part
Weight: 0.15 lbs.
Shipping: Ships Worldwide

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