Parts for your 1987 Suzuki Jimny-Drive belt tensioner

1987 Suzuki Jimny drive-belt-tensioner — what’s actually fitted?

For the 1987 Suzuki Jimny (SJ410/SJ413, also known locally as Sierra/Samurai), a separate spring-loaded drive-belt tensioner isn’t used. Factory documentation shows the engine runs traditional V-belts, and belt tension is set manually by moving the alternator (and, on air‑con models, by adjusting a simple idler). That’s confirmed by the Suzuki SJ410/SJ413 Factory Service Manual (Maintenance and Engine sections), common workshop references like the Haynes Owners Workshop Manual for SJ413/Samurai, and Suzuki’s electronic parts catalogues for the 1987 model year. None of these list a standalone automatic drive-belt tensioner for the alternator/water pump belt on this generation.

Why no tensioner? In this era, Suzuki kept things simple: individual V-belts with manual adjustment. The alternator pivots on a bracket and slides on a slotted arm