Because the Avanza is rear-wheel drive, the rear drums are load-bearing. The manual shows you the specific star-wheel adjuster orientation (driver vs passenger side are threaded opposite).
Toyota does not give these away for free legally. The "best" quality is always from Toyota Technical Information System (TIS) . You can subscribe for 24 hours (approx. $20 USD) and download every single PDF for your specific VIN (Van, F, or pick-up variant). This is the safest, highest resolution option. toyota avanza service manual pdf download best
If you fix cars regularly, consider a commercial license. Because the Avanza is rear-wheel drive, the rear
Most mechanics guess. The service manual gives you the exact sequence for the DOHC engine. You learn that the exhaust valves tighten over time. With the manual, you use a feeler gauge and a 10mm wrench to restore lost horsepower in 90 minutes. The "best" quality is always from Toyota Technical
If you are a professional mechanic or a dedicated DIYer who needs factory-correct torque specs, wiring diagrams, and diagnostic codes, the absolute best source is the official Toyota portal.
If Toyota TIS is too expensive or technical, consider these: