Products Description
GX160 Water Pump Starter Screw – M5 Starter Mounting Bolt
Precision Starter Fastener for Honda & Clone GX160 Engines
The starter screw is a specialized M5 hexagon head bolt designed for securing the recoil starter assembly to the engine housing on GX160, GX120, and GX200 series engines, commonly used on 2-inch water pumps . This mounting bolt features a unique shouldered design with a central fixing baseplate that ensures proper alignment and secure fastening of the starter assembly to the crankcase . Manufactured from durable steel with corrosion-resistant finish, this screw withstands the vibration and stress of repeated pull-start operations . Replacement is essential when original bolts are lost, stripped, or damaged during starter maintenance, ensuring reliable starter attachment and safe engine operation.
Technical Profiles & Materials
Precision M5 Thread – Features a standard M5 × 0.80 mm thread that matches the threaded holes in the engine crankcase, ensuring secure fastening of the starter assembly without cross-threading or stripping .
Shouldered Mounting Design – Includes a 7mm shoulder and 12.5mm baseplate that centers the starter assembly correctly, preventing misalignment that can cause starter pawl binding or premature wear .
Hex Head for Easy Installation – Designed for use with a 10mm hex wrench (socket or spanner), allowing for straightforward installation and removal during starter maintenance .
Durable Steel Construction – Manufactured from high-strength steel with a protective finish (often gold/yellow zinc plating) to resist corrosion and withstand repeated vibration in water pump applications .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Thread Diameter | M5 (5 mm) |
| 2 | Thread Pitch | 0.80 mm |
| 3 | Overall Length | Approx. 23 mm |
| 4 | Length Under Head | 18 mm |
| 5 | Threaded Length | 10 mm |
| 6 | Shoulder Diameter | 7 mm |
| 7 | Baseplate Diameter | 12.5 mm |
| 8 | Head Width | 10 mm (across flats) |
| 9 | Wrench Size | 10 mm hex |
| 10 | Material | Steel, zinc-plated finish |
| 11 | Compatibility | GX120, GX160, GX200, 168F, 170F |
Products Application
2-Inch Water Pump Starter Maintenance
The starter screw securely fastens the recoil starter assembly to the GX160 engine on 2-inch water pumps . Replacement is common when original screws are lost during starter service or become stripped from overtightening .
Starter Assembly Replacement
When installing a new recoil starter assembly, the provided or purchased mounting screws ensure proper fitment . Starter kits often include a set of screws specifically for GX160 engine mounting, simplifying installation for pump repair technicians .
Preventative Maintenance
Inspecting and tightening starter mounting screws is recommended during routine water pump service. Vibration from pump operation can cause screws to loosen over time, potentially leading to starter misalignment or damage . Replacing worn or corroded screws with new M5 hardware ensures reliable starter engagement and extends service life .
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm these screws fit my GX160 water pump starter?
A:Check your engine model number on the crankcase housing. These M5 starter screws fit GX120, GX160, and GX200 series engines used on 2-inch water pumps . The shoulder diameter (7mm) and baseplate (12.5mm) must match your existing starter mounting arrangement for correct alignment . Starter assemblies for GX160 typically have a bolt hole pattern with specific center-to-center spacing-139mm (triangular pattern) or 160mm across the center .
Q: What tools do I need to install starter screws?
A: A 10mm hex wrench or socket is required to tighten the M5 starter screws. Some starter kits include a screwdriver for installation . Apply light torque-overtightening can strip the aluminum threads in the crankcase . The typical starter assembly uses three mounting screws positioned in a triangular pattern .
Q: What is the MOQ and lead time?
A: MOQ: 100 PCS. Delivery: 7-14 days. Neutral export carton packaging.
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