878548 Mercury Throttle Lever | Genuine Used Part

🔧 Product Description

Genuine Mercury 115HP EFI Throttle Control Lever - Part Number: 878548

A genuine Mercury throttle-control lever for Yamaha-manufactured 115HP EFI four-stroke outboards.

The lever forms part of the powerhead-mounted throttle and shift linkage and works with primary lever 878550, springs, washers and collars to transfer remote-control movement to the throttle body.

⚙️ Key Features

• Genuine Mercury throttle-control lever
• Correct part number 878548
• Designed for Yamaha-built 115HP EFI four-strokes
• Factory lever ratio and pivot geometry
• Works with throttle lever 878550
• Used across all three main Mercury 115 EFI serial generations

🚤 Compatibility

Documented on

• Mercury 115HP EFI four-stroke, serial 0T178500-0T800999
• Mercury 115HP EFI four-stroke, serial 0T801000-1B226999
• Mercury 115HP EFI four-stroke, serial 1B227000-1B366822
• Standard- and counter-rotation rigging arrangements using the matching linkage
• Engine Type: Yamaha-manufactured Mercury inline-four EFI four-stroke outboard
• HP Range: 115HP

🔌 Function

The lever transfers control-cable movement through the engine-mounted linkage and helps establish the correct relationship between idle position and full throttle.

⚠️ Common Signs of Failure

• Lever pivot has excessive free play
• Engine does not reach full throttle
• Lever is bent or cracked
• Throttle does not return to idle
• Linkage binds at the pivot washers or collar

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 878548 current documented lever reference
• No direct supersession confirmed

OEM / Related Numbers

• 878548
• 878550 related primary throttle lever
• 12-84974M related flat washer
• 13-81868M related wave washer
• 24-804343 related spring
• 10-881375 related pivot bolt
• 23-881378 related collar
• 18-859746 related cotter pin

Aftermarket / Verified Equivalents

• Specialist used Mercury 878548 throttle lever
• Used complete Mercury 115 EFI throttle-linkage assembly
• Yamaha-platform equivalent may exist within the corresponding F115 linkage, but no verified direct Yamaha service number was confirmed
• No verified direct aftermarket lever

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated
• Inspect pivot hardware and spring tension before installation