# 12831-90J02 Suzuki Timing Chain Adjuster | Genuine Used Part πŸ”§ Product Description Genuine Used Suzuki Automatic Timing Chain Tensioner Adjuster - Part Number: 12831-90J02 A genuine pre-owned Suzuki Marine automatic timing-chain adjuster used across selected four-stroke outboard timing systems. The adjuster applies controlled force to the timing-chain tensioner, automatically taking up chain slack as the timing components wear and as engine temperature changes. βš™οΈ Key Features β€’ Genuine Suzuki Marine used adjuster assembly β€’ Current OEM part number 12831-90J02 β€’ Supersedes several earlier Suzuki adjuster references β€’ Automatic timing-chain slack compensation β€’ Used on selected DF40 / DF50 and DF90 / DF100 / DF115 / DF140 engines β€’ Original ratcheting or spring-loaded adjuster configuration πŸ”„ Supersession & Cross Reference OEM Supersession Chain: β€’ 12831-73G01 - Earlier adjuster assembly β€’ 12831-90J00 - Earlier tensioner adjuster β€’ 12831-90J01 - Later intermediate adjuster β€’ 12831-90J02 - Current service adjuster assembly OEM / Related Numbers: β€’ 12831-90J02 β€’ 1283190J02 β€’ 12831-90J02-000 β€’ 12831-90J01 β€’ 1283190J01 β€’ 12831-90J00 β€’ 1283190J00 β€’ 12831-73G01 β€’ 1283173G01 β€’ OEM Description: Adjuster Assembly, Tensioner Aftermarket / Verified Equivalents: β€’ No aftermarket equivalent 🚀 Compatibility Commonly used on selected: β€’ Suzuki DF40 β€’ Suzuki DF50 β€’ Suzuki DF90 β€’ Suzuki DF100 β€’ Suzuki DF115 β€’ Suzuki DF140 β€’ Suzuki-built Johnson four-stroke equivalents where the Suzuki number is specified Representative production applications: β€’ Selected DF40 / DF50 engines from the late 1990s through 2010 β€’ Selected DF90 / DF100 / DF115 / DF140 engines from the early 2000s through the early 2010s β€’ Application is controlled by model year, engine suffix and starting VIN Important fitment note: β€’ This adjuster is used across multiple timing-chain layouts. β€’ Confirm the exact engine diagram and tensioner arm. β€’ Do not release or extend the adjuster before the timing components are correctly positioned. β€’ Some service procedures require the adjuster to be reset, locked or primed before installation. πŸ”Œ Function The automatic adjuster maintains pressure against the timing-chain tensioner. Its internal spring and locking mechanism compensate for normal chain wear and prevent the chain from becoming loose during operation. Common signs of adjuster failure: β€’ Timing-chain rattle during start-up β€’ Persistent chain noise β€’ Adjuster plunger does not extend β€’ Plunger will not lock β€’ Oil leakage from the adjuster β€’ Timing chain becomes loose β€’ Cam timing shifts β€’ Difficult starting or reduced power β€’ Internal ratchet mechanism sticks Recommended checks before installation: β€’ Confirm the supersession and engine model β€’ Inspect the plunger for scoring β€’ Test the locking mechanism β€’ Reset the adjuster according to the service manual β€’ Inspect the timing chain, guides and tensioner arm β€’ Align all timing marks β€’ Rotate the crankshaft manually before starting β€’ Confirm the adjuster has released and applied chain pressure πŸ“¦ Condition β€’ Genuine Suzuki Marine used part β€’ Pre-owned internal engine component β€’ Oil staining and normal cosmetic wear may be present β€’ Mechanical operation must be checked before installation β€’ A new adjuster is generally preferred where service history is unknown β€’ Supplied in protective or equivalent packaging ## Details - **Price:** 27.5 AUD - **Vendor:** Sawley's Auto and Marine - **Tags:** Sawley’s AAM Used Parts – Timing Components | Timing Chains Gears & Components ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 27.50 AUD | In stock | ## Images - 12831-90J02 Suzuki Timing Chain Adjuster | Genuine Used Part - 12831-90J02 Suzuki Timing Chain Adjuster | Genuine Used Part - 12831-90J02 Suzuki Timing Chain Adjuster | Genuine Used Part --- > Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/12831-90j02-suzuki-timing-chain-adjuster-genuine-used-part) > Updated: 2026-07-12