Homelite 99981080034 Tappet – Genuine OEM Replacement Engine Valve Component

Part Number: 99981080034
Category: Small Engine Valve Train, Tappet & Internal Engine Parts
Type: Tappet – Genuine OEM Replacement Engine Valve Component

The Homelite 99981080034 Tappet is a genuine OEM replacement internal engine component designed for select Homelite, Ryobi, PowerStroke, and compatible small-engine equipment. Installed within the engine's valve-train system, the tappet helps transfer camshaft movement through the applicable valve-train components to control the opening and closing of the engine valves.

Product Specifications

• Part Number: 99981080034
• Manufacturer: Homelite
• Product Type: Tappet
• OEM Description: Tappet
• OEM Reference: 100004262
• Alternate Description: Engine Valve Tappet / Valve Lifter
• Component Type: Internal Engine / Valve Train Component
• Function: Transfers Camshaft Motion Through the Applicable Valve Train
• System: Camshaft / Valve Train / Cylinder Head
• Application: Small Engine / Outdoor Power Equipment
• Compatible Brands: Homelite / Ryobi / PowerStroke Applications
• Component Location: Internal Engine Valve Train
• Associated Components: Camshaft / Pushrod / Rocker Arm / Intake Valve / Exhaust Valve
• Replacement Type: Direct OEM Replacement
• OEM Status: Genuine OEM Part
• Condition: New
• Quantity: 1 Tappet
• Part Number Reference: 99981080034 / 100004262

Features & Benefits

• Genuine Homelite OEM replacement engine component
• Factory-designated Tappet 100004262
• Designed for compatible small-engine applications
• Operates within the engine valve-train assembly
• Transfers motion from the applicable camshaft mechanism
• Works with the pushrod and rocker-arm system where applicable
• Helps control proper intake and exhaust valve operation
• Supports accurate valve timing and movement
• Helps maintain proper engine breathing and combustion
• Manufactured to match the original equipment configuration
• Provides factory-style fit within compatible engine assemblies
• Helps restore a worn or damaged valve train
• Suitable for small-engine rebuilding and overhaul
• Ideal replacement for worn, scored, pitted, distorted, damaged, or missing tappets
• Direct replacement for equipment requiring 99981080034
• Genuine OEM component rather than a universal valve-train part

Applications

The Homelite 99981080034 Tappet is intended for select small engines and outdoor power equipment specifically designed to use this OEM valve-train component.

Applications may include:

• Homelite small-engine equipment
• Ryobi pressure washers
• PowerStroke pressure washers
• Select generator applications
• Compatible four-stroke small engines
• Engine valve-train assemblies
• Camshaft and pushrod systems
• Intake and exhaust valve assemblies
• Cylinder-head repair
• Small-engine rebuilding and overhaul
• OEM replacement applications requiring 99981080034 / 100004262

Because internal engine configurations can vary between equipment models and production revisions, exact compatibility should always be confirmed using the complete model, manufacturing number, and engine configuration.

Important Notes

• Verify compatibility with your specific equipment model, manufacturing number, serial number, engine model, and production revision before ordering.
• Homelite identifies 99981080034 as a Tappet, reference 100004262.
• Match part number 99981080034 directly with the number shown in your equipment's illustrated parts diagram or OEM documentation.
• This component is an internal engine tappet and should not be confused with a pushrod, rocker arm, valve, valve spring, camshaft, or complete valve-train assembly.
• Some engines may use more than one tappet. The quantity required by an engine does not necessarily indicate the quantity supplied when purchasing this part number.
• This listing should be considered for one tappet unless otherwise specified.
• Do not select a replacement tappet based solely on appearance. Diameter, length, contact-surface profile, material, hardness, and engine application can vary between similar-looking components.
• Tappets operate in direct relationship with the camshaft and other valve-train components. Excessive wear on one component can cause accelerated wear on another.
• Inspect the camshaft lobes, pushrods, rocker arms, valve stems, valve springs, valve guides, and associated components when replacing a worn tappet.
• Look for scoring, pitting, galling, abnormal surface wear, discoloration, deformation, or other evidence of lubrication or mechanical problems.
• If the original tappet has severe surface damage, inspect the corresponding camshaft contact surface before installing the replacement.
• A worn or damaged tappet may contribute to abnormal valve-train noise, improper valve movement, reduced engine performance, incorrect valve clearance, or difficulty maintaining proper engine operation.
• Similar symptoms can also result from incorrect valve clearance, worn camshaft lobes, bent pushrods, damaged rocker arms, weak valve springs, or other engine conditions.
• Maintain proper cleanliness during internal engine repairs. Dirt or abrasive particles introduced into the engine can cause rapid component wear.
• Lubricate the tappet and associated contact surfaces during assembly according to the applicable engine manufacturer's service procedure.
• Install the component in the correct factory position and orientation.
• Check and adjust valve clearance according to the specifications for the exact engine after completing valve-train repairs.
• Rotate the engine carefully by hand after reassembly, where applicable, to verify smooth valve-train operation before starting.
• Shut off the equipment, allow the engine to cool completely, disconnect the spark plug, and follow manufacturer service procedures before performing internal engine repairs.
• This listing is for one Homelite 99981080034 Tappet (100004262) only unless otherwise specified. Camshafts, pushrods, rocker arms, valves, valve springs, gaskets, and other internal engine components are sold separately.
• Match part number 99981080034 / 100004262 with your equipment's illustrated parts diagram or OEM documentation before ordering to ensure proper fitment.