Homelite JA994800 Right-Hand Pinion (HM20P5) – Genuine OEM Replacement Drive Gear

Part Number: JA994800
Category: Walk-Behind Lawn Mower Drive, Wheel & Transmission Parts
Type: Right-Hand Pinion (HM20P5) – Genuine OEM Replacement Drive Gear

The Homelite JA994800 Right-Hand Pinion (HM20P5) is a genuine OEM replacement drive component designed for select Homelite walk-behind lawn mowers. Installed within the mower's wheel-drive and traction system, this right-hand pinion works with the applicable drive wheel components to help transfer rotational movement through the mower's self-propelled drive assembly.

Product Specifications

• Part Number: JA994800
• Manufacturer: Homelite
• Product Type: Right-Hand Pinion
• OEM Description: R.H. Pinion (HM20P5)
• Alternate Description: Pinion (R.H.)
• Component Type: Drive Gear / Pinion Gear
• Position: Right-Hand (R.H.)
• Function: Transfers Drive Movement Within the Applicable Wheel / Traction Assembly
• System: Self-Propelled Drive / Wheel Drive Assembly
• Application: Walk-Behind Lawn Mower
• Compatible Brand: Homelite
• Associated Model Reference: HM20P5
• Replacement Type: Direct OEM Replacement
• OEM Status: Genuine Homelite OEM Part
• Condition: New
• Quantity: 1 Right-Hand Pinion
• Part Number Reference: JA994800

Parts diagrams confirm JA994800 as the right-hand pinion and show JA994801 as the corresponding left-hand pinion on applicable mower assemblies.

Features & Benefits

• Genuine Homelite OEM replacement drive component
• Factory-designated R.H. Pinion (HM20P5)
• Right-hand-specific drive gear
• Designed for compatible Homelite walk-behind lawn mowers
• Used within applicable self-propelled mower drive systems
• Works with the rear drive wheel and associated traction components
• Helps transfer rotational movement through the wheel-drive assembly
• Manufactured to match the original equipment configuration
• Helps restore a worn or damaged mower drive system
• Maintains the mower's original factory drive configuration
• Suitable for walk-behind mower maintenance, repair, and restoration
• Ideal replacement for worn, stripped, chipped, cracked, broken, damaged, or missing pinion gears
• Direct replacement for equipment requiring part number JA994800
• Genuine OEM component rather than a universal replacement drive gear

Applications

The Homelite JA994800 Right-Hand Pinion is documented across multiple Homelite walk-behind lawn mower platforms.

Confirmed applications include:

• Homelite HM20P5 (UT-30153-A) 20" Mulcher Walk-Behind Mower
• Homelite HSD20 (UT-30151-A) 20" Side Discharge Walk-Behind Mower
• Homelite HSD20V (UT-30141-A) 20" Side Discharge Walk-Behind Mower
• Homelite HSD202 (UT-30142-A) 20" Side Discharge Walk-Behind Mower
• Homelite HC20V (UT-30168) 20" Side Discharge Walk-Behind Mower
• Homelite HSD20P5 (UT-30523-A) 20" Side Discharge Walk-Behind Mower
• Homelite HMB21P5I (UT-30529-B) Walk-Behind Mower
• Homelite HSB21P5EI (UT-30517-B) Walk-Behind Mower
• Homelite HCM20P5 (UT-30525-A) Lawn Mower
• Select additional Homelite walk-behind mower drive assemblies
• OEM replacement applications requiring JA994800

Multiple mower parts diagrams specifically identify JA994800 as the R.H. Pinion, confirming its use across several Homelite walk-behind mower configurations.

Important Notes

• Verify compatibility with your specific Homelite mower model, UT number, serial number, and production revision before ordering.
• Homelite OEM parts suppliers identify JA994800 specifically as “R.H.PINION (HM20P5)” or “RIGHT HAND PINION (HM20P5).”
• This component is the right-hand pinion within applicable mower drive systems.
• Do not confuse JA994800 Right-Hand Pinion with JA994801 Left-Hand Pinion. They are separate, position-specific drive components.
• The right- and left-hand pinions should not automatically be interchanged, even if they appear similar.
• On applicable mower drive assemblies, JA994800 is positioned near components such as the rear drive wheel, drive wheel support, drive pin, thrust washer, compression spring, traction cable, and transmission.
• Inspect the mating drive wheel gear, drive pin, washers, shaft, transmission components, and wheel support when replacing the pinion.
• If the original pinion has stripped or excessively worn teeth, inspect the mating gear surfaces for corresponding damage.
• Worn drive gears may contribute to slipping, intermittent self-propel operation, poor wheel engagement, or loss of drive depending on the equipment configuration.
• Remove accumulated grass, dirt, grease, and debris from the applicable drive area during service.
• Replace worn, stripped, cracked, bent, corroded, or otherwise damaged related drive components as necessary.
• Install the replacement pinion in the same right-hand position and orientation as the original component.
• Verify that the drive components engage and rotate properly after installation before returning the mower to normal service.
  
• This listing is for one Homelite JA994800 Right-Hand Pinion (HM20P5) only unless otherwise specified. Left-hand pinions, drive wheels, transmissions, shafts, pins, washers, springs, and other drive components are sold separately.
• Match part number JA994800 with your mower's illustrated parts diagram or OEM documentation before ordering to ensure proper fitment.