導入
This manual provides essential instructions for the safe and proper use, installation, and maintenance of your Graco Tranzitions 3-in-1 Harness Booster Car Seat. This car seat is designed to adapt to your child's growth, offering three modes of use: a forward-facing harness booster, a highback belt-positioning booster, and a backless belt-positioning booster.
Always read and understand all instructions and warnings before using this product. Keep this manual in a safe place for future reference.

Image: The Graco Tranzitions 3-in-1 Harness Booster Car Seat, shown in its full configuration with harness, in the Proof 2.0 color scheme.
重要な安全情報
Your child's safety is paramount. This car seat is engineered to help protect your child in frontal, side, rear, and rollover crashes. Always adhere to the following safety guidelines:
- Always secure your child properly in the car seat according to the instructions for the current mode of use.
- Ensure the car seat is correctly installed in your vehicle using either the LATCH system or the vehicle's seat belt.
- 決して子供をチャイルドシートに放置しないでください。
- チャイルドシートが事故に遭った場合は、目に見える損傷がなくても使用しないでください。すぐに交換してください。
- 具体的なカーシートの取り付けガイドラインについては、車両のオーナーズマニュアルを参照してください。

Image: A child smiling in the Graco car seat, highlighting its "Protect Plus Engineered" safety features for various crash types.
使用モード
The Graco Tranzitions car seat offers three distinct modes to accommodate your child's growth:
- Forward-Facing Harness Booster: 体重26.5〜65ポンドのお子様向け。
- ハイバックベルトポジショニングブースター: 体重40〜100ポンドのお子様向け。
- バックレスベルトポジショニングブースター: 体重40〜100ポンドのお子様向け。

Image: Visual representation of the three modes: Harness booster (26.5-65 lb), Highback belt-positioning booster (40-100 lb), and Backless belt-positioning booster (40-100 lb), each with a child demonstrating proper use.
セットアップとインストール
Proper installation is crucial for safety. Always refer to the detailed instructions in the full product manual for your specific vehicle model. This section provides a general overview.
1. Harness Booster Installation (26.5-65 lb)
Install the car seat forward-facing using either the vehicle's LATCH system or the vehicle's seat belt. Ensure the top tether is always used when installing with the harness.
- LATCHシステム: 下部アンカーコネクタを車両の下部アンカーに取り付けます。チャイルドシートがしっかりと固定され、ベルトパスでの左右または前後の揺れが1インチ未満になるまで、LATCHストラップを締めます。
- 車のシートベルト: 車両の腰ベルトと肩ベルトを指定されたベルト経路に通します。シートベルトを締め、たるみをなくしてしっかりと固定します。
- トップテザー: Always attach and tighten the top tether strap to the vehicle's tether anchor point.

Image: A young child properly secured in the car seat using the 5-point harness system, demonstrating the forward-facing harness booster mode.
2. Highback Belt-Positioning Booster Installation (40-100 lb)
When your child is ready for the highback booster mode, remove the harness system. The car seat will then be secured using the vehicle's lap and shoulder belt.
- ブースターシートを車両の座席に配置します。
- Guide the vehicle's lap belt under the armrests and across your child's hips.
- Route the shoulder belt through the red open-loop belt guide on the headrest, ensuring it lies flat across your child's shoulder and chest.

Image: An older child seated in the highback booster mode, with the vehicle's seat belt correctly positioned through the red belt guide.

画像: クローズアップ view of the open-loop belt guides, designed to help properly position the vehicle's seat belt across the child's shoulder.
3. Backless Belt-Positioning Booster Installation (40-100 lb)
For older children, the highback portion can be removed to convert the seat into a backless booster.
- Remove the backrest from the booster base.
- Place the backless booster on the vehicle seat.
- Guide the vehicle's lap belt under the armrests and across your child's hips.
- Use the included shoulder belt positioning clip to ensure the shoulder belt lies correctly across your child's shoulder and chest.

Image: A child using the backless booster mode, with the vehicle's seat belt properly positioned across their lap and shoulder.
操作手順
シンプルセーフアジャストハーネスシステム
The Simply Safe Adjust Harness System allows you to adjust the harness and headrest height simultaneously with one hand, without rethreading the harness straps. This ensures a proper fit as your child grows.
- To adjust, locate the adjustment handle at the top of the headrest.
- Squeeze the handle and slide the headrest up or down to the desired position.
- Ensure the harness straps are at or just below your child's shoulders when in the forward-facing harness mode.

Image: A hand demonstrating the "Simply Safe Adjust" feature, showing how the headrest and harness move together for easy height adjustment.
カップホルダー
The car seat features two rotating cup holders. These can be rotated inward to save space or outward for easy access to drinks and snacks.

画像: クローズアップ view of the dual rotating cup holders, designed for easy access and space-saving.
メンテナンスと清掃
定期的なメンテナンスにより、車のシートの寿命と衛生状態が保たれます。
- Seat Pad and Harness Covers: The seat pad and harness covers are machine washable. Refer to the care tag for specific washing instructions (typically cold water, delicate cycle, and air dry).
- Buckle and LATCH Hardware: 広告付きでクリーンamp 布。 刺激の強い化学薬品や研磨剤を使用しないでください。
- プラスチックおよび金属部品: Wipe clean with mild soap and cool water.
- ハーネスストラップ: Spot clean only with mild soap and a damp cloth. Do NOT machine wash, bleach, or iron harness straps, as this may weaken them.
トラブルシューティング
If you encounter issues with your car seat, review the following common solutions. For persistent problems, contact customer support.
| 問題 | 考えられる解決策 |
|---|---|
| 取り付け後、車のシートが緩いように感じます。 | Ensure the LATCH strap or vehicle seat belt is tightened fully. The seat should not move more than 1 inch at the belt path. Recline the vehicle seat slightly if possible to help achieve a tighter fit. |
| ハーネスストラップの調整が難しい。 | Check for twists in the harness straps. Ensure the Simply Safe Adjust handle is fully squeezed when attempting to adjust the headrest and harness height. |
| Buckle is hard to latch or unlatch. | Check for debris in the buckle mechanism. Clean the buckle with a damp cloth. Do not lubricate. If the issue persists, contact customer support. |
| Shoulder belt does not position correctly in booster mode. | Ensure the headrest is adjusted to the correct height so the shoulder belt passes through the red belt guide and lies flat across your child's shoulder. For backless mode, ensure the shoulder belt positioning clip is used. |
製品仕様
| 特徴 | 詳細 |
|---|---|
| モデル番号 | 2215750 |
| 製品寸法 | 17.4 x 19 x 26.5インチ |
| アイテム重量 | 15.1ポンド |
| Minimum Weight (Harness) | 26.5 ポンド |
| Maximum Weight (Harness/Booster) | 100 ポンド |
| 最大高さの推奨値 | 57インチ |
| 材質タイプ | 金属、プラスチック、ポリエステル |
| 材料構成 | ポリエステル |
| お手入れ方法 | Machine Washable (seat pad and harness covers) |
| リクライニングポジションの数 | 9 (headrest/harness height positions) |
| 電池が必要 | いいえ |
| オリエンテーション | 前向き |
| ハーネスタイプ | 5ポイント |
| インストールタイプ | ラッチ |
| 色 | 証明2.0 |
保証情報
Graco products are covered by a manufacturer's warranty. For specific details regarding the warranty period and coverage for your Graco Tranzitions 3-in-1 Harness Booster Car Seat, please refer to the warranty card included with your product packaging or visit the official Graco webサイトでご確認ください。保証請求に備えて購入証明書を保管してください。
カスタマーサポート
For further assistance, questions, or to order replacement parts, please contact Graco Customer Service. You can typically find contact information on the Graco website or on the product's registration card.
オンラインリソース: 公式Gracoをご覧ください website for FAQs, instructional videos, and product registration.
連絡先: Refer to your product packaging or the Graco web最新のカスタマー サービス電話番号とメール アドレスについては、サイトをご覧ください。